{"id":"CVE-2026-41405","aliases":["GHSA-p464-m8x6-vhv8"],"url":"https://o3.security/vulnerability/CVE-2026-41405","summary":"OpenClaw < 2026.3.31 - Resource Exhaustion via Unauthenticated MS Teams Webhook Body Parsing","details":"## Summary\nMS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion\n\n## Current Maintainer Triage\n- Status: open\n- Normalized severity: medium\n- Assessment: v2026.3.28 still parses Teams JSON after only a Bearer-prefix gate and before real JWT validation, and the auth-before-parse fix is not yet shipped.\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Latest published npm version: `2026.3.31`\n- Vulnerable version range: `<=2026.3.28`\n- Patched versions: `>= 2026.3.31`\n- First stable tag containing the fix: `v2026.3.31`\n\n## Fix Commit(s)\n- `3834d47099dd13c8244ed6de8b9ea9855c553623` — 2026-03-30T13:46:40+01:00\n\nOpenClaw thanks @AntAISecurityLab for reporting.","published":"2026-04-28T18:10:03.317Z","modified":"2026-08-17T03:48:14.817561786Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.3.31"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623","label":"openclaw/openclaw@3834d47"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41405.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41405"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsing"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/releases/tag/v2026.3.31"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-17T03:48:14.817561786Z"}}