Vulnerability Description
OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows unauthorized senders to bypass intended authorization checks. When a team/channel route allowlist is configured with an empty groupAllowFrom parameter, the message handler synthesizes wildcard sender authorization, permitting any sender in the matched team/channel to trigger replies in allowlisted Teams routes.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openclaw | Openclaw | < 2026.3.8 |
Related Weaknesses (CWE)
References
- https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a17Patch
- https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxqVendor Advisory
- https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoThird Party Advisory
FAQ
What is CVE-2026-34506?
CVE-2026-34506 is a vulnerability with a CVSS score of 4.3 (MEDIUM). OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows unauthorized senders to bypass intended authorization checks. When a team/channel ro...
How severe is CVE-2026-34506?
CVE-2026-34506 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34506?
Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.