{"id":"CVE-2026-35628","aliases":["GHSA-vcx4-4qxg-mfp4"],"url":"https://o3.security/vulnerability/CVE-2026-35628","summary":"OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Telegram Webhook Rate Limiting","details":"## Summary\n\nTelegram Webhook Missing Guess Rate Limiting Enables Brute-Force Guessing of Weak Webhook Secret\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Affected versions: `<= 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\nTelegram webhook auth previously rejected bad secrets but did not throttle repeated guesses, allowing brute-force attempts against weak webhook secrets. Commit `c2c136ae9517ddd0789d742a0fdf4c10e8c729a7` adds repeated-guess throttling before auth failure responses.\n\nVerified vulnerable on tag `v2026.3.24` and fixed on `main` by commit `c2c136ae9517ddd0789d742a0fdf4c10e8c729a7`.\n\n## Fix Commit(s)\n\n- `c2c136ae9517ddd0789d742a0fdf4c10e8c729a7`\n\n## Release Process Note\n\n`2026.3.25` is the next planned OpenClaw release version in `package.json`. This advisory is being published ahead of that npm release so the draft is no longer blocked; once `2026.3.25` is published, the structured patched-version metadata will match the released artifact.","published":"2026-04-09T21:27:00.140Z","modified":"2026-08-12T03:51:49.225565655Z","cvss":null,"epss":{"score":0.00287,"percentile":0.20884,"asOf":"2026-08-06"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":null}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/c2c136ae9517ddd0789d742a0fdf4c10e8c729a7","label":"openclaw/openclaw@c2c136a"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35628.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-vcx4-4qxg-mfp4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35628"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-telegram-webhook-rate-limiting"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/c2c136ae9517ddd0789d742a0fdf4c10e8c729a7"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:49.225565655Z"}}