{"id":"CVE-2026-32899","aliases":["GHSA-rm2p-j3r7-4x4j"],"url":"https://o3.security/vulnerability/CVE-2026-32899","summary":"OpenClaw < 2026.2.25 - Sender Policy Bypass in Slack Reaction and Pin Event Handlers","details":"### Summary\nOpenClaw Slack monitor handled `reaction_*` and `pin_*` non-message events before applying sender-policy checks consistently.\n\nIn affected versions, these events could be added to system-event context even when sender policy would not normally allow them.\n\n### Affected Packages / Versions\n- Package: npm `openclaw`\n- Latest published affected version confirmed: `2026.2.24` (npm latest as of February 26, 2026)\n- Affected range: `<= 2026.2.24`\n- Patched version : `2026.2.25`\n\n### Technical Details\n- `reaction_*` and `pin_*` handlers now route through shared sender authorization (`authorizeSlackSystemEventSender`).\n- Enforced checks now include:\n  - DM `dmPolicy` / `allowFrom`\n  - channel `users` allowlist enforcement for non-DM channels\n  - channel-level allow checks before system-event enqueue\n- Regression coverage added for DM allow/deny and channel-user allowlist deny paths.\n\n### Fix Commit(s)\n- `aedf62ac7e669a89c7b299201bf6537dc6b12e0e`\n- `75dfb71e4e8b7c2feba5a8ca662f92ea840e0147`\n\n### Impact\nLow-severity policy-consistency issue in Slack non-message event ingress.\nThis may introduce unexpected reaction/pin context signals from senders outside configured policy.\n\n### Release Process Note\n`patched_versions` is pre-set to planned release `2026.2.25`. Advisory published with npm release `2026.2.25`.\n\nOpenClaw thanks @tdjackey for reporting.","published":"2026-03-21T00:42:35.477Z","modified":"2026-08-12T03:51:33.112527587Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.2.25"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/75dfb71e4e8b7c2feba5a8ca662f92ea840e0147","label":"openclaw/openclaw@75dfb71"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32899.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-rm2p-j3r7-4x4j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32899"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-sender-policy-bypass-in-slack-reaction-and-pin-event-handlers"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/75dfb71e4e8b7c2feba5a8ca662f92ea840e0147"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/aedf62ac7e669a89c7b299201bf6537dc6b12e0e"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:33.112527587Z"}}