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OWASP BLT CVE-2026-42603

| EUVD-2026-29126 HIGH
Code Injection (CWE-94)
2026-05-11 GitHub_M
8.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch available
May 11, 2026 - 18:17 EUVD
Analysis Generated
May 11, 2026 - 16:47 vuln.today
CVE Published
May 11, 2026 - 16:11 nvd
HIGH 8.8

DescriptionNVD

OWASP BLT is a QA testing and vulnerability disclosure platform that encompasses websites, apps, git repositories, and more. Prior to 2.1.2, .github/workflows/pre-commit-fix.yaml uses pull_request_target (privileged trigger) but checks out and executes code directly from the attacker's fork, enabling RCE with write permissions. This vulnerability is fixed in 2.1.2.

AnalysisAI

Remote code execution in OWASP BLT versions prior to 2.1.2 enables attackers to execute arbitrary code with repository write permissions via malicious GitHub pull requests. The vulnerability exploits a GitHub Actions workflow misconfiguration where pull_request_target triggers execute code directly from attacker-controlled forks without proper validation. …

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RemediationAI

Within 24 hours: Identify all repositories running OWASP BLT versions prior to 2.1.2 and disable pull_request_target workflows or restrict them to trusted branches only. Within 7 days: Implement GitHub branch protection rules requiring code review before merge and audit recent pull request activity for suspicious commits. …

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CVE-2026-42603 vulnerability details – vuln.today

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