{"id":"CVE-2026-34506","aliases":["GHSA-g7cr-9h7q-4qxq"],"url":"https://o3.security/vulnerability/CVE-2026-34506","summary":"OpenClaw < 2026.3.8 - Sender Allowlist Bypass in Microsoft Teams Plugin via Route Allowlist Configuration","details":"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.\n\nThis 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.\n\n## Affected Packages / Versions\n\n- Package: `openclaw` (npm)\n- Latest published vulnerable version: `2026.3.7`\n- Affected range: `<= 2026.3.7`\n- Fixed in released version: `2026.3.8`\n\n## Fix Commit(s)\n\n- `88aee9161e0e6d32e810a25711e32a808a1777b2`\n\n## Release Verification\n\n- Verified fixed in GitHub release `v2026.3.8` published on March 9, 2026.\n- Verified `npm view openclaw version` resolves to `2026.3.8`.\n- 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.\n\nThanks @zpbrent for reporting.","published":"2026-03-31T11:17:21.379Z","modified":"2026-08-12T03:51:37.475042745Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.3.8"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2","label":"openclaw/openclaw@88aee91"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34506.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-g7cr-9h7q-4qxq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34506"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:37.475042745Z"}}