CVE-2026-42603

HIGH

OWASP BLT: pre-commit-fix.yaml executes untrusted fork code via pull_request_target

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.0025
EPSS Percentile 16.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-94 CWE-95
Status published
Products (1)
OWASP-BLT/BLT < 2.1.2
Published May 11, 2026
Tracked Since May 11, 2026