{"id":"GHSA-g7cr-9h7q-4qxq","summary":"OpenClaw's MS Teams sender allowlist bypass when route allowlist is configured and sender allowlist is empty","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: `\u003c= 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.","aliases":["CVE-2026-34506"],"modified":"2026-04-06T23:12:29.814086Z","published":"2026-03-12T14:21:35Z","database_specific":{"github_reviewed_at":"2026-03-12T14:21:35Z","nvd_published_at":null,"cwe_ids":["CWE-289"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","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":"WEB","url":"https://github.com/openclaw/openclaw/commit/88aee9161e0e6d32e810a25711e32a808a1777b2"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-in-microsoft-teams-plugin-via-route-allowlist-configuration"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.3.8"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 2026.3.7","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-g7cr-9h7q-4qxq/GHSA-g7cr-9h7q-4qxq.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"}]}