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Description

OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability in MS Teams thread history fetched via Graph API. Attackers can retrieve thread messages that should be filtered by sender allowlists, bypassing message filtering restrictions.

PUBLISHED Reserved 2026-04-20 | Published 2026-04-27 | Updated 2026-04-28 | Assigner VulnCheck




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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

Problem types

CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')

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-chfm-xgc4-47rj (GitHub Security Advisory (GHSA-chfm-xgc4-47rj)) vendor-advisory

github.com/...ommit/5cca38084074fb5095aa11b6a59820d63e4937c9 (Patch Commit) patch

www.vulncheck.com/...ist-bypass-via-graph-api-thread-history (VulnCheck Advisory: OpenClaw < 2026.3.31 - Sender Allowlist Bypass via Graph API Thread History) third-party-advisory

cve.org (CVE-2026-41365)

nvd.nist.gov (CVE-2026-41365)

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