{"id":"GHSA-3h52-cx59-c456","summary":"OpenClaw: Feishu webhook reads and parses unauthenticated request bodies before signature validation","details":"## Summary\n\nFeishu webhook reads and parses unauthenticated request bodies before signature validation\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Affected versions: `\u003c= 2026.3.24`\n- First patched version: `2026.3.25`\n- Latest published npm version at verification time: `2026.3.24`\n\n## Details\n\nFeishu webhook handling previously parsed JSON before signature validation, which let unauthenticated callers force full JSON parsing work before rejection. Commit `5e8cb22176e9235e224be0bc530699261eb60e53` reads the raw request body, validates the signature first, and only then parses JSON.\n\nVerified vulnerable on tag `v2026.3.24` and fixed on `main` by commit `5e8cb22176e9235e224be0bc530699261eb60e53`.\n\n## Fix Commit(s)\n\n- `5e8cb22176e9235e224be0bc530699261eb60e53`","aliases":["CVE-2026-35640"],"modified":"2026-04-10T20:42:17.774742Z","published":"2026-03-29T15:48:58Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-03-29T15:48:58Z","nvd_published_at":null,"cwe_ids":["CWE-400"],"severity":"MODERATE"},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35640"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsing"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.3.28"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-3h52-cx59-c456/GHSA-3h52-cx59-c456.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:N/VA:L/SC:N/SI:N/SA:N"}]}