{"id":"CVE-2026-17495","aliases":["GHSA-4p3w-j4w9-5jqw"],"url":"https://o3.security/vulnerability/CVE-2026-17495","summary":"moment vulnerable to Path Traversal via crafted non-string locale name","details":"moment is a JavaScript date library for parsing, validating, manipulating, and formatting dates. In versions 2.29.2 through 2.30.1, a specially crafted non-string object passed to moment.locale() can bypass the locale-name path-traversal guard. The guard assumes the input is a string, so an object whose match() method satisfies the check while its toString() returns a traversal path reaches an internal require() call with attacker-controlled path segments. This is an incomplete fix for CVE-2022-24785 and primarily affects npm (server-side) users that pass user-provided input directly to moment.locale(). The issue is fixed in moment 2.31.0, and users should upgrade to 2.31.0 or later. As a workaround, validate that any user-supplied input is a string before passing it to moment.locale().","published":"2026-09-15T05:40:55.263Z","modified":"2026-10-21T02:56:15.027376526Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"moment","fixedVersion":"2.31.0"}],"fix":{"url":"https://github.com/moment/moment/pull/6386","label":"moment/moment#6386"},"references":[{"type":"ADVISORY","url":"https://cna.openjsf.org/security-advisories.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17495.json"},{"type":"ADVISORY","url":"https://github.com/moment/moment/security/advisories/GHSA-4p3w-j4w9-5jqw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17495"},{"type":"WEB","url":"https://github.com/moment/moment/pull/6386"},{"type":"WEB","url":"https://github.com/moment/moment/commit/5f7d983c9881e65e07574de9dda3190d99520c07"},{"type":"PACKAGE","url":"https://github.com/moment/moment"},{"type":"WEB","url":"https://github.com/moment/moment/releases/tag/2.31.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:56:15.027376526Z"}}