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Description

OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.

PUBLISHED Reserved 2026-04-20 | Published 2026-04-28 | Updated 2026-04-29 | Assigner VulnCheck




LOW: 2.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Problem types

CWE-639 Authorization Bypass Through User-Controlled Key

Product status

Default status
unaffected

Any version before 2026.3.31
affected

2026.3.31 (semver)
unaffected

Credits

AntAISecurityLab reporter

References

github.com/...enclaw/security/advisories/GHSA-877v-w3f5-3pcq (GitHub Security Advisory (GHSA-877v-w3f5-3pcq)) vendor-advisory

github.com/...ommit/f45e5a6569aab1d58cc6de25b19f1dc4c8779b85 (Patch Commit) patch

www.vulncheck.com/...-via-thread-history-and-quoted-messages (VulnCheck Advisory: OpenClaw < 2026.3.31 - Sender Allowlist Bypass via Thread History and Quoted Messages) third-party-advisory

cve.org (CVE-2026-41406)

nvd.nist.gov (CVE-2026-41406)

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