CVE-2026-34506
OpenClaw's MS Teams sender allowlist bypass when route allowlist is configured and sender allowlist is empty
Impact
OpenClaw's Microsoft Teams plugin widened group sender authorization when a team/channel route allowlist was configured but `groupAllowFrom` was empty. Before the fix, a matching route allowlist entry could cause the message handler to synthesize wildcard sender authorization for that route, allowing any sender in the matched team/channel to bypass the intended `groupPolicy: "allowlist"` sender check. This does not affect default unauthenticated access, but it does weaken a documented Teams group authorization boundary and can allow unauthorized group senders to trigger replies in allowlisted Teams routes. ## Affected Packages / Versions - Package: `openclaw` (npm) - Latest published vulnerable version: `2026.3.7` - Affected range: `<= 2026.3.7` - Fixed in released version: `2026.3.8` ## Fix Commit(s) - `88aee9161e0e6d32e810a25711e32a808a1777b2` ## Release Verification - Verified fixed in GitHub release `v2026.3.8` published on March 9, 2026. - Verified `npm view openclaw version` resolves to `2026.3.8`. - Verified the release contains the regression test covering the Teams route-allowlist sender-bypass case and that the test passes against the `v2026.3.8` tree. Thanks @zpbrent for reporting.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | openclaw | <= 2026.3.7 | 2026.3.8 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openclaw | Openclaw | before 2026.3.8 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2
- https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxq
- https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration
- https://github.com/advisories/GHSA-g7cr-9h7q-4qxq
- https://nvd.nist.gov/vuln/detail/CVE-2026-34506