CVE-2026-34506
OpenClaw < 2026.3.8 - Sender Allowlist Bypass in Microsoft Teams Plugin via Route Allowlist Configuration
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
8th
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.
| CWE | CWE-863 |
| Vendor | openclaw |
| Product | openclaw |
| Published | Mar 31, 2026 |
| Last Updated | Mar 31, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
OpenClaw / OpenClaw
0 < 2026.3.8
References
github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxq github.com: https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2 vulncheck.com: https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration
Credits
🔍 Peng Zhou (@zpbrent)