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Description

OpenClaw before 2026.4.2 contains a timing side channel vulnerability in shared-secret comparison call sites that use early length-mismatch checks instead of fixed-length comparison helpers. Attackers can measure timing differences to leak secret-length information, weakening constant-time handling for shared secrets.

PUBLISHED Reserved 2026-04-20 | Published 2026-04-28 | Updated 2026-04-28 | Assigner VulnCheck




MEDIUM: 6.3CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-208 Observable Timing Discrepancy

Product status

Default status
unaffected

Any version before 2026.4.2
affected

2026.4.2 (semver)
unaffected

Credits

KEXNA (@kexinoh) reporter

References

github.com/...enclaw/security/advisories/GHSA-jj6q-rrrf-h66h (GitHub Security Advisory (GHSA-jj6q-rrrf-h66h)) vendor-advisory

github.com/...ommit/be10ecef770a4654519869c3641bbb91087c8c7b (Patch Commit) patch

www.vulncheck.com/...ide-channel-in-shared-secret-comparison (VulnCheck Advisory: OpenClaw < 2026.4.2 - Timing Side Channel in Shared-Secret Comparison) third-party-advisory

cve.org (CVE-2026-41407)

nvd.nist.gov (CVE-2026-41407)

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