OpenMAIC SSRF Validation Bypass Exposes Cloud Credentials

OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.

Casky was already ahead

This CVE exploits attack patterns that Casky's 381matched 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.

Analysis

OpenMAIC before version 1.0.1 contains a critical server-side request forgery (SSRF) vulnerability that bypasses validation in non-production builds. By manipulating the x-base-url header or baseUrl parameter, unauthenticated attackers can redirect requests to cloud instance metadata services, gaining unauthorized access to sensitive credentials and infrastructure metadata. This vulnerability affects any organization deploying OpenMAIC in development or testing environments that may share networks with production systems, creating a direct path to cloud credential compromise without requiring authentication or insider access.

Casky's 381 mapped security skills detect the attack patterns underlying this vulnerability by analyzing MITRE ATT&CK techniques across three critical phases: Reconnaissance (TA0001) where attackers probe for metadata endpoints, Resource Development (TA0006) where they craft malicious URLs and headers, and Initial Access (TA0004) where they exploit the SSRF to reach cloud services. Through Claude's extended reasoning capabilities, practitioners will see findings highlighting suspicious x-base-url or baseUrl parameters in request logs, unvalidated redirect patterns in non-production builds, and anomalous connections to 169.254.169.254 or equivalent cloud metadata ranges. The skills framework correlates these indicators with CWE-306 (missing authentication) and CWE-918 (SSRF) patterns, enabling security teams to quickly identify compromised deployments and trace lateral movement into cloud infrastructure before credentials are exfiltrated.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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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 →

381 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-86259.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

Run

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0004 TA0006 TA0001

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