CVE-2026-42423 | THREATINT

Description

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 commands that should require explicit user approval, circumventing the intended security boundary.

PUBLISHED Reserved 2026-04-27 | Published 2026-04-28 | Updated 2026-04-28 | Assigner VulnCheck

HIGH: 7.7CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.5CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-636: Not Failing Securely (Failing Open)

Product status

Default status

unaffected

Any version before 2026.4.8

affected

2026.4.8 (semver)

unaffected

Credits

zsx (@zsxsoft) reporter

KeenSecurityLab finder

References

github.com/...enclaw/security/advisories/GHSA-q2gc-xjqw-qp89 (GitHub Security Advisory (GHSA-q2gc-xjqw-qp89)) vendor-advisory

github.com/...ommit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 (Patch Commit) patch

www.vulncheck.com/...ry-bypass-via-approval-timeout-fallback (VulnCheck Advisory: OpenClaw < 2026.4.8 - strictInlineEval Approval Boundary Bypass via Approval-Timeout Fallback) third-party-advisory

cve.org (CVE-2026-42423)

nvd.nist.gov (CVE-2026-42423)

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