What is CVE-2026-42423?

CVE-2026-42423 is a high-severity vulnerability in Openclaw, classified under CWE-636. CVSS score: 7.5/10. Published 2026-04-28.

How severe is CVE-2026-42423?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Openclaw

CVE-2026-42423

OpenClaw before 2026.4.8 contains an approval-timeout fallback mechanism that bypasses strictInlineEval explicit-approval requirements on gateway and node exec hosts. Attackers can exploit this timeout fallback to execute inline eval comma…

EPSS: 0.001 (17.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Openclaw — versions 0, 2026.4.8

Weakness classification (CWE)

CWE-636

References

GitHub Security Advisory (GHSA-q2gc-xjqw-qp89) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.4.8 - strictInlineEval Approval Boundary Bypass via Approval-Timeout Fallback (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-42423?: CVE-2026-42423 is a high-severity vulnerability in Openclaw, classified under CWE-636. CVSS score: 7.5/10. Published 2026-04-28.
How severe is CVE-2026-42423?: High severity. CVSS v3 base score is 7.5 out of 10.