Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tomlister Payflex Payment Gateway payflex-payment-gateway allows Reflected XSS.This issue affects Payflex Payment Gateway: from n/a through 2.7.1.
Casky was already ahead
This CVE exploits attack patterns that Casky's 323matched 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.
Tomlister's Payflex Payment Gateway versions through 2.7.1 contain a reflected cross-site scripting (XSS) vulnerability stemming from improper input neutralization during web page generation. This CWE-79 flaw allows attackers to inject malicious scripts into user requests, which are then reflected back in responses without sanitization. The vulnerability is particularly critical for payment processing systems, where attackers could steal session tokens, payment credentials, or redirect users to phishing pages. Any organization deploying Payflex Payment Gateway is affected, with risk escalating for those handling customer financial data or processing high transaction volumes.
Casky's 323 mapped security skills leverage Claude AI with extended reasoning to identify the attack patterns associated with techniques TA0001 (Reconnaissance) and TA0043 (Reconnaissance via probing for XSS injection points). Practitioners using Casky would detect this vulnerability through skill triggers that recognize: (1) unvalidated user input reflected in HTTP responses, (2) absence of content security policies or output encoding, and (3) payloads containing script tags or event handlers in URL parameters targeting the gateway's form fields. The platform's skills would flag behavioral indicators such as suspicious query string modifications, unusual character encoding patterns typical of XSS obfuscation, and response patterns indicating reflected content—enabling teams to identify both active exploitation attempts and misconfigured endpoints before they're weaponized in payment fraud campaigns.
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These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-103346.
Casky has 323 skills that investigate the attack patterns behind CVE-2026-103346. Run one and get CVSS-scored findings in 3 minutes.
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penetration testing · medium
Account Access Removal
cloud security · low
Account Manipulation
cloud security · low
Account Manipulation: Account Linking
cloud security · low
Account Manipulation: Change Account Details
cloud security · low
Account Manipulation: Change of Payment Details
phishing defense · medium
Account Takeover
red teaming · high
Account Takeover
red teaming · high
Account Takeover
phishing defense · medium
Account Takeover: Exposed Login Credential
red teaming · high
Account Takeover: Exposed Login Credential
phishing defense · medium
achieving-cmmc-level-2-compliance
compliance governance · low
analyzing-apt-group-with-mitre-navigator
threat intelligence · low
analyzing-campaign-attribution-evidence
threat intelligence · low
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cloud security · low
analyzing-cyber-kill-chain
threat intelligence · low
analyzing-ios-app-security-with-objection
mobile security · low
analyzing-malicious-url-with-urlscan
phishing defense · medium
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threat intelligence · low
analyzing-office365-audit-logs-for-compromise
cloud security · low
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threat intelligence · low
analyzing-threat-actor-ttps-with-mitre-navigator
threat intelligence · low
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threat intelligence · low
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threat intelligence · low
auditing-aws-s3-bucket-permissions
cloud security · low
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cloud security · low
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cloud security · low
auditing-tls-certificate-transparency-logs
threat intelligence · low
automating-ioc-enrichment
threat intelligence · low
Browser Session Hijacking
cloud security · low
Brute Force: Credential Stuffing
threat intelligence · low
building-adversary-infrastructure-tracking-system
threat intelligence · low
building-attack-pattern-library-from-cti-reports
threat intelligence · low
building-c2-infrastructure-with-sliver-framework
red teaming · high
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red teaming · high
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devsecops · low
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threat intelligence · low
building-ioc-enrichment-pipeline-with-opencti
threat intelligence · low
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red teaming · high
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vulnerability management · medium
bypassing-authentication-with-forced-browsing
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coercing-authentication-with-coercer-petitpotam
red teaming · high
collecting-open-source-intelligence
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collecting-threat-intelligence-with-misp
threat intelligence · low
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conducting-cloud-penetration-testing
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conducting-cyber-risk-assessment-with-nist-800-30
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red teaming · high
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red teaming · high
conducting-mobile-app-penetration-test
penetration testing · medium
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penetration testing · medium
conducting-pass-the-ticket-attack
red teaming · high
conducting-wireless-network-penetration-test
penetration testing · medium
Convert to Cryptocurrency
cloud security · low
correlating-threat-campaigns
threat intelligence · low
Create Fake Materials: Fake Website
phishing defense · medium
Create Fake Materials: Fake Website
threat intelligence · low
Create Fake Materials: Fake Website
phishing defense · medium
Create Fake Materials: Fake Website
phishing defense · medium
Create Fake Materials: Fake Website
phishing defense · medium
Create Fake Materials: Fake Website
penetration testing · medium
Delete Relevant Emails
phishing defense · medium
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
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api security · medium
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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
Electronic Funds Transfer: Wire Transfer
phishing defense · medium
Electronic Funds Transfer: Wire Transfer
threat intelligence · low
Email Spoofing
threat intelligence · low
emulating-cloud-attacks-with-stratus-red-team
cloud security · low
enumerating-cloud-with-cloudfox
cloud security · low
evaluating-threat-intelligence-platforms
threat intelligence · low
executing-active-directory-attack-simulation
penetration testing · medium
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compliance governance · low
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red teaming · high
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red teaming · high
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red teaming · high
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red teaming · high
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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
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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
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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
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exploiting-template-injection-vulnerabilities
web application security · medium
exploiting-type-juggling-vulnerabilities
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exploiting-vulnerabilities-with-metasploit-framework
vulnerability management · medium
exploiting-websocket-vulnerabilities
web application security · medium
exploiting-zerologon-vulnerability-cve-2020-1472
red teaming · high
Gather Customer Information
threat intelligence · low
generating-threat-intelligence-reports
threat intelligence · low
hunting-advanced-persistent-threats
threat intelligence · low
Impersonate Account Holder
phishing defense · medium
Impersonate Account Holder
phishing defense · medium
implementing-api-abuse-detection-with-rate-limiting
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api security · medium
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devsecops · low
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vulnerability management · medium
implementing-aws-config-rules-for-compliance
cloud security · low
implementing-aws-macie-for-data-classification
cloud security · low
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cloud security · low
implementing-aws-security-hub
cloud security · low
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cloud security · low
implementing-azure-defender-for-cloud
cloud security · low
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vulnerability management · medium
implementing-cloud-waf-rules
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implementing-cloud-workload-protection
cloud security · low
implementing-code-signing-for-artifacts
devsecops · low
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threat intelligence · low
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devsecops · low
implementing-gcp-binary-authorization
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implementing-gcp-organization-policy-constraints
cloud security · low
implementing-gcp-vpc-firewall-rules
cloud security · low
implementing-gdpr-data-protection-controls
compliance governance · low
implementing-github-advanced-security-for-code-scanning
devsecops · low
implementing-hipaa-security-rule-safeguards
compliance governance · low
implementing-infrastructure-as-code-security-scanning
devsecops · low
implementing-iso-27001-information-security-management
compliance governance · low
implementing-mobile-application-management
mobile security · low
implementing-patch-management-workflow
vulnerability management · medium
implementing-pci-dss-compliance-controls
compliance governance · low
implementing-policy-as-code-with-open-policy-agent
devsecops · low
implementing-rapid7-insightvm-for-scanning
vulnerability management · medium
implementing-secret-scanning-with-gitleaks
devsecops · low
implementing-secrets-management-with-vault
cloud security · low
implementing-secrets-scanning-in-ci-cd
devsecops · low
implementing-security-information-sharing-with-stix2
threat intelligence · low
implementing-semgrep-for-custom-sast-rules
devsecops · low
implementing-stix-taxii-feed-integration
threat intelligence · low
implementing-taxii-server-with-opentaxii
threat intelligence · low
implementing-threat-intelligence-lifecycle-management
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implementing-web-application-logging-with-modsecurity
web application security · medium
implementing-zero-trust-in-cloud
cloud security · low
implementing-zero-trust-network-access
cloud security · 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
managing-intelligence-lifecycle
threat intelligence · low
managing-third-party-vendor-risk
compliance governance · low
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red teaming · high
mapping-mitre-attack-techniques
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modeling-threats-with-opencti
threat intelligence · low
moving-laterally-with-netexec
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operating-havoc-c2
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red teaming · high
operationalizing-misp-threat-feeds
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performing-active-directory-bloodhound-analysis
red teaming · high
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performing-agentless-vulnerability-scanning
vulnerability management · medium
performing-ai-driven-osint-correlation
threat intelligence · low
performing-android-app-static-analysis-with-mobsf
mobile security · low
performing-api-fuzzing-with-restler
api security · medium
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api security · medium
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performing-container-image-hardening
devsecops · low
performing-content-security-policy-bypass
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performing-csrf-attack-simulation
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threat intelligence · low
performing-directory-traversal-testing
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performing-dmarc-policy-enforcement-rollout
phishing defense · medium
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performing-external-network-penetration-test
penetration testing · medium
performing-gcp-penetration-testing-with-gcpbucketbrute
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performing-gcp-security-assessment-with-forseti
cloud security · low
performing-graphql-depth-limit-attack
api security · medium
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performing-http-parameter-pollution-attack
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threat intelligence · low
performing-ios-app-security-assessment
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performing-iot-security-assessment
penetration testing · medium
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threat intelligence · low
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performing-kerberoasting-attack
red teaming · high
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performing-malware-ioc-extraction
threat intelligence · low
performing-mobile-app-certificate-pinning-bypass
mobile security · low
performing-nist-csf-maturity-assessment
compliance governance · low
performing-open-source-intelligence-gathering
red teaming · high
performing-osint-with-spiderfoot
threat intelligence · low
performing-physical-intrusion-assessment
red teaming · high
performing-privilege-escalation-assessment
penetration testing · medium
performing-privilege-escalation-on-linux
red teaming · high
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devsecops · low
performing-second-order-sql-injection
web application security · medium
performing-security-headers-audit
web application security · medium
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cloud security · low
performing-soap-web-service-security-testing
api security · medium
performing-subdomain-enumeration-with-subfinder
web application security · medium
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threat intelligence · low
performing-threat-intelligence-sharing-with-misp
threat intelligence · low
performing-threat-landscape-assessment-for-sector
threat intelligence · low
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devsecops · low
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penetration testing · medium
performing-web-application-firewall-bypass
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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
threat intelligence · low
Phishing
threat intelligence · low
Phone Number Spoofing: Official Phone Number Spoofing
red teaming · high
prioritizing-vulnerabilities-with-cvss-scoring
vulnerability management · medium
processing-stix-taxii-feeds
threat intelligence · low
profiling-threat-actor-groups
threat intelligence · low
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
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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
Stage Capabilities: SEO Poisoning
threat intelligence · 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
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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
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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
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testing-for-xss-vulnerabilities
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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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