{"id":"CVE-2026-41372","aliases":["GHSA-fh32-73r9-rgh5"],"url":"https://o3.security/vulnerability/CVE-2026-41372","summary":"OpenClaw < 2026.4.2 - Loopback Protection Bypass via Trailing-Dot Localhost in CDP Discovery","details":"## Summary\n\nBefore OpenClaw 2026.4.2, remote CDP discovery could return a trailing-dot localhost host such as `localhost.` and bypass OpenClaw's loopback-host normalization. That let a non-loopback remote CDP profile pivot the follow-up connection back onto localhost.\n\n## Impact\n\nA hostile discovery response could retarget authenticated browser control toward a localhost-resolving endpoint on the OpenClaw host. This weakened the existing remote-CDP loopback protection and could expose localhost-backed browser state.\n\n## Affected Packages / Versions\n\n- Package: `openclaw` (npm)\n- Affected versions: `<= 2026.4.1`\n- Patched versions: `>= 2026.4.2`\n- Latest published npm version: `2026.4.1`\n\n## Fix Commit(s)\n\n- `9c22d636697336a6b22b0ae24798d8b8325d7828` — normalize localhost absolute-form CDP hosts before loopback checks\n\n## Release Process Note\n\nThe fix is present on `main` and is staged for OpenClaw `2026.4.2`. Publish this advisory after the `2026.4.2` npm release is live.\n\nThanks @smaeljaish771 for reporting.","published":"2026-04-27T23:24:33.545Z","modified":"2026-08-12T03:51:22.192751644Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.4.2"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/9c22d636697336a6b22b0ae24798d8b8325d7828","label":"openclaw/openclaw@9c22d63"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41372.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-fh32-73r9-rgh5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41372"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-loopback-protection-bypass-via-trailing-dot-localhost-in-cdp-discovery"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/9c22d636697336a6b22b0ae24798d8b8325d7828"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:22.192751644Z"}}