A flaw was found in the `guardrails-detectors` component. This vulnerability allows a remote attacker to perform a blind Server-Side Request Forgery (SSRF) by submitting a specially crafted XML Schema Definition (XSD) string. This can lead to unauthorized access to sensitive information, including credentials from cloud metadata services, Kubernetes API, internal MinIO, and other internal network endpoints. Additionally, it enables local file reads of critical data such as service account tokens and pod secrets.
Casky was already ahead
This CVE exploits attack patterns that Casky's 331matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.
CVE-2026-15378 is a critical blind Server-Side Request Forgery (SSRF) vulnerability in the guardrails-detectors component that exploits XML Schema Definition (XSD) processing to bypass network boundaries. By submitting specially crafted XSD strings, remote attackers can force the vulnerable service to make unauthorized requests to internal resources, including cloud metadata services (AWS IMDSv2, GCP metadata endpoints), Kubernetes API servers, MinIO instances, and other internal network services. The attack also enables local file read access to sensitive data such as service account tokens. This vulnerability is particularly dangerous because it affects security-focused tools—guardrails detectors are designed to prevent harmful outputs—creating a supply chain risk for organizations using this component in their AI safety infrastructure. Any organization deploying guardrails-detectors in production environments with network access to internal services is at risk of credential exposure and lateral movement.
Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →
These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-15378.
Casky has 331 skills that investigate the attack patterns behind CVE-2026-15378. Run one and get CVSS-scored findings in 3 minutes.
Run the skill that detects this →Access with Stolen Session Cookie
cryptography · low
Access with Stolen Session Cookie
penetration testing · medium
Access with Stolen Session Cookie
identity access management · low
Access with Stolen Session Cookie
identity access management · low
Account Access Removal
cloud security · low
Account Manipulation
identity access management · low
Account Manipulation
cloud security · low
Account Manipulation
identity access management · low
Account Manipulation: Account Linking
cloud security · low
Account Manipulation: Add Authorized User
identity access management · low
Account Manipulation: Change Account Details
cloud security · low
Account Manipulation: Change of Payment Details
phishing defense · medium
Account Manipulation: Enable Account Features
identity access management · low
Account Manipulation: Enable Account Features
identity access management · low
Account Takeover
red teaming · high
Account Takeover
identity access management · low
Account Takeover
identity access management · low
Account Takeover
red teaming · high
Account Takeover
identity access management · low
Account Takeover
phishing defense · medium
Account Takeover: Exposed Login Credential
red teaming · high
Account Takeover: Exposed Login Credential
identity access management · low
Account Takeover: Exposed Login Credential
phishing defense · medium
Account Takeover: Exposed Login Credential
identity access management · low
Account Takeover: Exposed Login Credential
identity access management · low
Account Takeover: Password Reset
identity access management · low
Adversary-in-the-Middle
identity access management · low
analyzing-cloud-storage-access-patterns
cloud security · low
analyzing-ios-app-security-with-objection
mobile security · low
analyzing-malicious-url-with-urlscan
phishing defense · medium
analyzing-office365-audit-logs-for-compromise
cloud security · low
attacking-entra-id-with-roadtools
identity access management · low
attacking-oauth-with-device-code-phishing
identity access management · low
auditing-aws-s3-bucket-permissions
cloud security · low
auditing-azure-active-directory-configuration
cloud security · low
auditing-cloud-with-cis-benchmarks
cloud security · low
auditing-entra-id-with-aadinternals
identity access management · low
auditing-gcp-iam-permissions
cloud security · low
auditing-terraform-infrastructure-for-security
cloud security · low
Browser Session Hijacking
cloud security · low
building-c2-infrastructure-with-sliver-framework
red teaming · high
building-c2-redirector-infrastructure
red teaming · high
building-cloud-siem-with-sentinel
cloud security · low
building-devsecops-pipeline-with-gitlab-ci
devsecops · low
building-patch-tuesday-response-process
vulnerability management · medium
building-red-team-c2-infrastructure-with-havoc
red teaming · high
building-role-mining-for-rbac-optimization
identity access management · low
building-vulnerability-aging-and-sla-tracking
vulnerability management · medium
building-vulnerability-dashboard-with-defectdojo
vulnerability management · medium
building-vulnerability-exception-tracking-system
vulnerability management · medium
bypassing-authentication-with-forced-browsing
web application security · medium
coercing-authentication-with-coercer-petitpotam
red teaming · high
conducting-api-security-testing
penetration testing · medium
conducting-cloud-penetration-testing
cloud security · low
conducting-domain-persistence-with-dcsync
red teaming · high
conducting-external-reconnaissance-with-osint
penetration testing · medium
conducting-full-scope-red-team-engagement
red teaming · high
conducting-internal-network-penetration-test
penetration testing · medium
conducting-internal-reconnaissance-with-bloodhound-ce
red teaming · high
conducting-mobile-app-penetration-test
penetration testing · medium
conducting-network-penetration-test
penetration testing · medium
conducting-pass-the-ticket-attack
red teaming · high
conducting-wireless-network-penetration-test
penetration testing · medium
configuring-active-directory-tiered-model
identity access management · low
configuring-aws-verified-access-for-ztna
zero trust architecture · low
configuring-certificate-authority-with-openssl
cryptography · low
configuring-hsm-for-key-storage
cryptography · low
configuring-microsegmentation-for-zero-trust
zero trust architecture · low
configuring-multi-factor-authentication-with-duo
identity access management · low
configuring-tls-1-3-for-secure-communications
cryptography · low
configuring-zscaler-private-access-for-ztna
zero trust architecture · low
Convert to Cryptocurrency
cloud security · low
Create Fake Materials: Fake Website
phishing defense · medium
Create Fake Materials: Fake Website
phishing defense · medium
Create Fake Materials: Fake Website
penetration testing · medium
Create Fake Materials: Fake Website
phishing defense · medium
Create Fake Materials: Fake Website
phishing defense · medium
Delete Relevant Emails
phishing defense · medium
deploying-cloudflare-access-for-zero-trust
zero trust architecture · low
deploying-palo-alto-prisma-access-zero-trust
zero trust architecture · low
deploying-software-defined-perimeter
zero trust architecture · low
deploying-tailscale-for-zero-trust-vpn
zero trust architecture · low
detecting-api-enumeration-attacks
api security · medium
detecting-aws-guardduty-findings-automation
cloud security · low
detecting-aws-iam-privilege-escalation
cloud security · low
detecting-azure-lateral-movement
cloud security · low
detecting-azure-service-principal-abuse
cloud security · low
detecting-azure-storage-account-misconfigurations
cloud security · low
detecting-broken-object-property-level-authorization
api security · medium
detecting-cloud-threats-with-guardduty
cloud security · low
detecting-misconfigured-azure-storage
cloud security · low
detecting-s3-data-exfiltration-attempts
cloud security · low
detecting-serverless-function-injection
cloud security · low
detecting-shadow-api-endpoints
api security · medium
detecting-shadow-it-cloud-usage
cloud security · low
detecting-suspicious-oauth-application-consent
cloud security · low
Device Fingerprint Spoofing
identity access management · low
Device Fingerprint Spoofing
identity access management · low
Electronic Funds Transfer: Wire Transfer
phishing defense · medium
emulating-cloud-attacks-with-stratus-red-team
cloud security · low
enumerating-cloud-with-cloudfox
cloud security · low
executing-active-directory-attack-simulation
penetration testing · medium
executing-red-team-engagement-planning
red teaming · high
executing-red-team-exercise
penetration testing · medium
exploiting-active-directory-certificate-services-esc1
red teaming · high
exploiting-active-directory-with-bloodhound
red teaming · high
exploiting-adcs-with-certipy
red teaming · high
exploiting-api-injection-vulnerabilities
api security · medium
exploiting-aws-with-pacu
cloud security · low
exploiting-broken-function-level-authorization
api security · medium
exploiting-broken-link-hijacking
web application security · medium
exploiting-constrained-delegation-abuse
red teaming · high
exploiting-deeplink-vulnerabilities
mobile security · low
exploiting-excessive-data-exposure-in-api
api security · medium
exploiting-http-request-smuggling
web application security · medium
exploiting-idor-vulnerabilities
web application security · medium
exploiting-insecure-data-storage-in-mobile
mobile security · low
exploiting-insecure-deserialization
web application security · medium
exploiting-jwt-algorithm-confusion-attack
api security · medium
exploiting-kerberoasting-with-impacket
red teaming · high
exploiting-mass-assignment-in-rest-apis
web application security · medium
exploiting-ms17-010-eternalblue-vulnerability
red teaming · high
exploiting-nopac-cve-2021-42278-42287
red teaming · high
exploiting-nosql-injection-vulnerabilities
web application security · medium
exploiting-oauth-misconfiguration
web application security · medium
exploiting-prototype-pollution-in-javascript
web application security · medium
exploiting-race-condition-vulnerabilities
web application security · medium
exploiting-server-side-request-forgery
web application security · medium
exploiting-sql-injection-vulnerabilities
penetration testing · medium
exploiting-sql-injection-with-sqlmap
web application security · medium
exploiting-template-injection-vulnerabilities
web application security · medium
exploiting-type-juggling-vulnerabilities
web application security · medium
exploiting-vulnerabilities-with-metasploit-framework
vulnerability management · medium
exploiting-websocket-vulnerabilities
web application security · medium
exploiting-zerologon-vulnerability-cve-2020-1472
red teaming · high
Impersonate Account Holder
phishing defense · medium
Impersonate Account Holder
phishing defense · medium
implementing-aes-encryption-for-data-at-rest
cryptography · low
implementing-api-abuse-detection-with-rate-limiting
api security · medium
implementing-api-gateway-security-controls
api security · medium
implementing-api-key-security-controls
api security · medium
implementing-api-rate-limiting-and-throttling
api security · medium
implementing-api-schema-validation-security
api security · medium
implementing-api-security-posture-management
api security · medium
implementing-api-security-testing-with-42crunch
api security · medium
implementing-api-threat-protection-with-apigee
api security · medium
implementing-aqua-security-for-container-scanning
devsecops · low
implementing-attack-path-analysis-with-xm-cyber
vulnerability management · medium
implementing-aws-config-rules-for-compliance
cloud security · low
implementing-aws-iam-permission-boundaries
identity access management · low
implementing-aws-macie-for-data-classification
cloud security · low
implementing-aws-nitro-enclave-security
cloud security · low
implementing-aws-security-hub
cloud security · low
implementing-aws-security-hub-compliance
cloud security · low
implementing-azure-defender-for-cloud
cloud security · low
implementing-beyondcorp-zero-trust-access-model
zero trust architecture · low
implementing-cisa-zero-trust-maturity-model
zero trust architecture · low
implementing-cloud-dlp-for-data-protection
cloud security · low
implementing-cloud-security-posture-management
cloud security · low
implementing-cloud-trail-log-analysis
cloud security · low
implementing-cloud-vulnerability-posture-management
vulnerability management · medium
implementing-cloud-waf-rules
cloud security · low
implementing-cloud-workload-protection
cloud security · low
implementing-code-signing-for-artifacts
devsecops · low
implementing-conditional-access-policies-azure-ad
identity access management · low
implementing-continuous-security-validation-with-bas
vulnerability management · medium
implementing-device-posture-assessment-in-zero-trust
zero trust architecture · low
implementing-digital-signatures-with-ed25519
cryptography · low
implementing-dmarc-dkim-spf-email-security
phishing defense · medium
implementing-email-sandboxing-with-proofpoint
phishing defense · medium
implementing-end-to-end-encryption-for-messaging
cryptography · low
implementing-envelope-encryption-with-aws-kms
cryptography · low
implementing-epss-score-for-vulnerability-prioritization
vulnerability management · medium
implementing-fuzz-testing-in-cicd-with-aflplusplus
devsecops · low
implementing-gcp-binary-authorization
cloud security · low
implementing-gcp-organization-policy-constraints
cloud security · low
implementing-gcp-vpc-firewall-rules
cloud security · low
implementing-github-advanced-security-for-code-scanning
devsecops · low
implementing-infrastructure-as-code-security-scanning
devsecops · low
implementing-just-in-time-access-provisioning
identity access management · low
implementing-jwt-signing-and-verification
cryptography · low
implementing-microsegmentation-with-guardicore
zero trust architecture · low
implementing-mobile-application-management
mobile security · low
implementing-passwordless-authentication-with-fido2
identity access management · low
implementing-patch-management-workflow
vulnerability management · medium
implementing-policy-as-code-with-open-policy-agent
devsecops · low
implementing-privileged-session-monitoring
identity access management · low
implementing-rapid7-insightvm-for-scanning
vulnerability management · medium
implementing-rsa-key-pair-management
cryptography · low
implementing-secret-scanning-with-gitleaks
devsecops · low
implementing-secrets-management-with-vault
cloud security · low
implementing-secrets-scanning-in-ci-cd
devsecops · low
implementing-semgrep-for-custom-sast-rules
devsecops · low
implementing-vulnerability-management-with-greenbone
vulnerability management · medium
implementing-vulnerability-remediation-sla
vulnerability management · medium
implementing-vulnerability-sla-breach-alerting
vulnerability management · medium
implementing-web-application-logging-with-modsecurity
web application security · medium
implementing-zero-knowledge-proof-for-authentication
cryptography · low
implementing-zero-standing-privilege-with-cyberark
identity access management · low
implementing-zero-trust-dns-with-nextdns
zero trust architecture · low
implementing-zero-trust-for-saas-applications
zero trust architecture · low
implementing-zero-trust-in-cloud
cloud security · low
implementing-zero-trust-network-access
cloud security · low
implementing-zero-trust-network-access-with-zscaler
zero trust architecture · low
Insider Access Abuse
zero trust architecture · low
Insider Access Abuse
identity access management · low
integrating-dast-with-owasp-zap-in-pipeline
devsecops · low
integrating-sast-into-github-actions-pipeline
devsecops · low
intercepting-mobile-traffic-with-burpsuite
mobile security · low
mapping-attack-paths-with-bloodhound-ce
red teaming · high
migrating-to-post-quantum-cryptography
cryptography · low
moving-laterally-with-netexec
penetration testing · medium
operating-havoc-c2
red teaming · high
operating-sliver-c2
red teaming · high
performing-access-review-and-certification
identity access management · low
performing-active-directory-bloodhound-analysis
red teaming · high
performing-active-directory-penetration-test
penetration testing · medium
performing-active-directory-vulnerability-assessment
vulnerability management · medium
performing-agentless-vulnerability-scanning
vulnerability management · medium
performing-android-app-static-analysis-with-mobsf
mobile security · low
performing-api-fuzzing-with-restler
api security · medium
performing-api-inventory-and-discovery
api security · medium
performing-api-rate-limiting-bypass
api security · medium
performing-api-security-testing-with-postman
api security · medium
performing-asset-criticality-scoring-for-vulns
vulnerability management · medium
performing-authenticated-scan-with-openvas
vulnerability management · medium
performing-authenticated-vulnerability-scan
vulnerability management · medium
performing-aws-account-enumeration-with-scout-suite
cloud security · low
performing-aws-privilege-escalation-assessment
cloud security · low
performing-blind-ssrf-exploitation
web application security · medium
performing-clickjacking-attack-test
web application security · medium
performing-cloud-asset-inventory-with-cartography
cloud security · low
performing-cloud-forensics-with-aws-cloudtrail
cloud security · low
performing-cloud-log-forensics-with-athena
cloud security · low
performing-cloud-native-forensics-with-falco
cloud security · low
performing-cloud-native-threat-hunting-with-aws-detective
cloud security · low
performing-cloud-penetration-testing-with-pacu
cloud security · low
performing-container-image-hardening
devsecops · low
performing-content-security-policy-bypass
web application security · medium
performing-csrf-attack-simulation
web application security · medium
performing-cve-prioritization-with-kev-catalog
vulnerability management · medium
performing-directory-traversal-testing
web application security · medium
performing-dmarc-policy-enforcement-rollout
phishing defense · medium
performing-dynamic-analysis-of-android-app
mobile security · low
performing-external-network-penetration-test
penetration testing · medium
performing-gcp-penetration-testing-with-gcpbucketbrute
cloud security · low
performing-gcp-security-assessment-with-forseti
cloud security · low
performing-graphql-depth-limit-attack
api security · medium
performing-graphql-introspection-attack
api security · medium
performing-graphql-security-assessment
web application security · medium
performing-hardware-security-module-integration
cryptography · low
performing-hash-cracking-with-hashcat
cryptography · low
performing-http-parameter-pollution-attack
web application security · medium
performing-ios-app-security-assessment
mobile security · low
performing-iot-security-assessment
penetration testing · medium
performing-jwt-none-algorithm-attack
api security · medium
performing-kerberoasting-attack
red teaming · high
performing-lateral-movement-with-wmiexec
red teaming · high
performing-mobile-app-certificate-pinning-bypass
mobile security · low
performing-open-source-intelligence-gathering
red teaming · high
performing-physical-intrusion-assessment
red teaming · high
performing-post-quantum-cryptography-migration
cryptography · low
performing-privilege-escalation-assessment
penetration testing · medium
performing-privilege-escalation-on-linux
red teaming · high
performing-privileged-account-access-review
identity access management · low
performing-privileged-account-discovery
identity access management · low
performing-sca-dependency-scanning-with-snyk
devsecops · low
performing-second-order-sql-injection
web application security · medium
performing-security-headers-audit
web application security · medium
performing-serverless-function-security-review
cloud security · low
performing-service-account-audit
identity access management · low
performing-soap-web-service-security-testing
api security · medium
performing-ssl-certificate-lifecycle-management
cryptography · low
performing-subdomain-enumeration-with-subfinder
web application security · medium
performing-thick-client-application-penetration-test
penetration testing · medium
performing-threat-modeling-with-owasp-threat-dragon
devsecops · low
performing-vulnerability-scanning-with-nessus
penetration testing · medium
performing-web-application-firewall-bypass
web application security · medium
performing-web-application-penetration-test
penetration testing · medium
performing-web-application-scanning-with-nikto
vulnerability management · medium
performing-web-application-vulnerability-triage
vulnerability management · medium
performing-web-cache-deception-attack
web application security · medium
performing-web-cache-poisoning-attack
web application security · medium
performing-wireless-network-penetration-test
penetration testing · medium
Phishing for Information
zero trust architecture · low
Phone Number Spoofing: Official Phone Number Spoofing
red teaming · high
post-exploiting-microsoft-graph-with-graphrunner
identity access management · low
prioritizing-vulnerabilities-with-cvss-scoring
vulnerability management · medium
relaying-ntlm-for-adcs-esc8
red teaming · high
remediating-s3-bucket-misconfiguration
cloud security · low
reverse-engineering-ios-app-with-frida
mobile security · low
scanning-containers-with-trivy-in-cicd
devsecops · low
scanning-iac-and-images-with-trivy
devsecops · low
scanning-infrastructure-with-nessus
vulnerability management · medium
securing-api-gateway-with-aws-waf
cloud security · low
securing-aws-lambda-execution-roles
cloud security · low
securing-azure-with-microsoft-defender
cloud security · low
securing-container-registry-images
cloud security · low
securing-github-actions-workflows
devsecops · low
securing-kubernetes-on-cloud
cloud security · low
securing-serverless-functions
cloud security · low
Steal Web Session Cookie
zero trust architecture · low
Steal Web Session Cookie
identity access management · low
Steal Web Session Cookie
identity access management · low
testing-android-intents-for-vulnerabilities
mobile security · low
testing-api-authentication-weaknesses
api security · medium
testing-api-for-broken-object-level-authorization
api security · medium
testing-api-for-mass-assignment-vulnerability
api security · medium
testing-api-security-with-owasp-top-10
web application security · medium
testing-cors-misconfiguration
web application security · medium
testing-for-broken-access-control
web application security · medium
testing-for-business-logic-vulnerabilities
web application security · medium
testing-for-email-header-injection
web application security · medium
testing-for-host-header-injection
web application security · medium
testing-for-json-web-token-vulnerabilities
web application security · medium
testing-for-open-redirect-vulnerabilities
web application security · medium
testing-for-sensitive-data-exposure
web application security · medium
testing-for-xml-injection-vulnerabilities
web application security · medium
testing-for-xss-vulnerabilities
penetration testing · medium
testing-for-xss-vulnerabilities-with-burpsuite
web application security · medium
testing-for-xxe-injection-vulnerabilities
web application security · medium
testing-jwt-token-security
web application security · medium
testing-mobile-api-authentication
mobile security · low
testing-oauth2-implementation-flaws
api security · medium
testing-websocket-api-security
api security · medium
triaging-vulnerabilities-with-ssvc-framework
vulnerability management · medium
Use Alternate Authentication Material: Application Access Token
cloud security · low
Use Alternate Authentication Material: Application Access Token
cloud security · low
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