Auth bypass in Openclaw
CVE-2026-43572
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Openclaw — versions 2026.4.10, 2026.4.14
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-gc9r-867r-j85f (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/80b1fa17bfc3f6a668492f0326ea52f48bb89776 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-missing-sender-authorization-in-microsoft… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-43572?
- CVE-2026-43572 is a medium-severity vulnerability in Openclaw, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-05-05.
- How severe is CVE-2026-43572?
- Medium severity. CVSS v3 base score is 5.3 out of 10.