{"id":"CVE-2026-54650","aliases":["GHSA-fh2f-xfxc-q9cc","GO-2026-6135"],"url":"https://o3.security/vulnerability/CVE-2026-54650","summary":"openhole-server vulnerable to path traversal via URL-decoded request path","details":"## Summary\n\nopenhole-server forwarded the URL-decoded request path (`r.URL.Path`) to tunnel clients instead of the original request-target. Percent-encoded dot-segments (`%2e`) and separators (`%2f`) were decoded to `../` and `/` before reaching the local service.\n\nGo's ServeMux rejects literal `../` paths, but percent-encoded traversal sequences bypassed this and were delivered to backends as working path traversal.\n\n## Impact\n\nAn unauthenticated remote attacker could read files outside the published web root on tunneled local services that resolve paths without canonicalization.\n\nExample:\n- `/%2e%2e/secret.txt` → file outside web root\n- `/%2e%2e/%2e%2e/etc/passwd` → sensitive files\n\nEncoded slashes (`/a%2fb`) could also bypass path-based access controls.\n\n## Fix\n\nv0.1.2 forwards `r.URL.EscapedPath()` on the server and preserves the request-target on the CLI client.\n\nUsers should upgrade both openhole-server and the openhole CLI to v0.1.2 or later.","published":"2026-07-28T22:20:36.566Z","modified":"2026-10-25T02:30:50.728268711Z","cvss":{"score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"},"epss":{"score":0.00361,"percentile":0.29535,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/bablilayoub/openhole","fixedVersion":"0.1.2"}],"fix":{"url":"https://github.com/bablilayoub/openhole/commit/a28c27adde2a7ed0c347b730c8707208c0f78ed3","label":"bablilayoub/openhole@a28c27a"},"references":[{"type":"WEB","url":"https://github.com/bablilayoub/openhole/releases/tag/v0.1.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54650.json"},{"type":"ADVISORY","url":"https://github.com/bablilayoub/openhole/security/advisories/GHSA-fh2f-xfxc-q9cc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54650"},{"type":"FIX","url":"https://github.com/bablilayoub/openhole/commit/a28c27adde2a7ed0c347b730c8707208c0f78ed3"},{"type":"PACKAGE","url":"https://github.com/bablilayoub/openhole"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-25T02:30:50.728268711Z"}}