What is CVE-2026-42603?

CVE-2026-42603 is a high-severity vulnerability in Owasp-blt Blt, classified under Code Injection. CVSS score: 8.8/10. Published 2026-05-11.

How severe is CVE-2026-42603?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Owasp-blt Blt

CVE-2026-42603

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…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.000 (14.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Owasp-blt Blt — versions < 2.1.2

Weakness classification (CWE)

CWE-94 — Code Injection
CWE-95 — Eval Injection

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-42603?: CVE-2026-42603 is a high-severity vulnerability in Owasp-blt Blt, classified under Code Injection. CVSS score: 8.8/10. Published 2026-05-11.
How severe is CVE-2026-42603?: High severity. CVSS v3 base score is 8.8 out of 10.