{"id":"GHSA-h97f-6pqj-q452","summary":"OpenClaw has a IPv6 multicast SSRF classifier bypass","details":"### Summary\nOpenClaw's SSRF IP classifier did not treat IPv6 multicast literals (`ff00::/8`) as blocked/private-internal. This allowed literal multicast hosts to pass SSRF preflight checks.\n\n### Impact\nA bypass in address classification existed for IPv6 multicast literals. OpenClaw's network fetch/navigation paths are constrained to HTTP/HTTPS and this was triaged as low-severity defense-in-depth hardening.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected versions: `\u003c= 2026.2.24`\n- Patched versions: `\u003e= 2026.2.25` \n\n### Technical Details\nThe IPv6 private/internal range set omitted `multicast`, so addresses like `ff02::1` and `ff05::1:3` were not classified as blocked by the shared SSRF classifier.\n\n### Fix Commit(s)\n- `baf656bc6fd7f83b6033e6dbc2548ec75028641f`\n\n### Release Process Note\n`patched_versions` is pre-set to the planned next npm release (`2026.2.25`). Once that release is published on npm, the advisory is published.\n\nOpenClaw thanks @zpbrent for reporting.","modified":"2026-03-04T15:15:11.125567Z","published":"2026-03-03T21:48:55Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-03T21:48:55Z","nvd_published_at":null,"cwe_ids":["CWE-918"]},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-h97f-6pqj-q452"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/baf656bc6fd7f83b6033e6dbc2548ec75028641f"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.25"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 2026.2.24","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-h97f-6pqj-q452/GHSA-h97f-6pqj-q452.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N"}]}