CVE-2026-43572 | THREATINT

Description

OpenClaw versions 2026.4.10 before 2026.4.14 contain a missing authorization vulnerability in the Microsoft Teams SSO invoke handler that fails to apply sender allowlist checks. Attackers can bypass sender authorization by sending SSO invoke requests that are processed without proper validation, allowing unauthorized access to Teams SSO signin functionality.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-05 | Updated 2026-05-05 | Assigner VulnCheck

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

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status

unaffected

2026.4.10 (semver) before 2026.4.14

affected

2026.4.14 (semver)

unaffected

Credits

zsx (@zsxsoft) reporter

KeenSecurityLab coordinator

qclawer tool

References

github.com/...enclaw/security/advisories/GHSA-gc9r-867r-j85f (GitHub Security Advisory (GHSA-gc9r-867r-j85f)) vendor-advisory

github.com/...ommit/80b1fa17bfc3f6a668492f0326ea52f48bb89776 (Patch Commit) patch

www.vulncheck.com/...n-in-microsoft-teams-sso-invoke-handler (VulnCheck Advisory: OpenClaw 2026.4.10 < 2026.4.14 - Missing Sender Authorization in Microsoft Teams SSO Invoke Handler) third-party-advisory

cve.org (CVE-2026-43572)

nvd.nist.gov (CVE-2026-43572)

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