{"id":"GHSA-h97f-6pqj-q452","aliases":[],"status":"published","title":"OpenClaw has a IPv6 multicast SSRF classifier bypass","description":"### 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.","severity":{"version":"4.0","score":6.3,"vector":"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","level":"medium","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-918"],"published":"2026-03-03T21:48:55Z","modified":"2026-03-04T15:15:11Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.2.25"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2026.2.24"},{"fixed":"2026.2.25"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.25"}]}]}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-h97f-6pqj-q452","tags":["web"]},{"url":"https://github.com/openclaw/openclaw/commit/baf656bc6fd7f83b6033e6dbc2548ec75028641f","tags":["web"]},{"url":"https://github.com/advisories/GHSA-h97f-6pqj-q452"},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-h97f-6pqj-q452","title":"OpenClaw has a IPv6 multicast SSRF classifier bypass","description":"### 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.","status":"published","published":"2026-03-03T21:48:55Z","modified":"2026-03-03T21:48:56Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:39:30.031684Z"}],"osv":[{"id":"GHSA-h97f-6pqj-q452","title":"OpenClaw has a IPv6 multicast SSRF classifier bypass","description":"### 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.","status":"published","published":"2026-03-03T21:48:55Z","modified":"2026-03-04T15:15:11.125567Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:46:48.920784Z"}]}}