{"id":"CVE-2026-35613","aliases":["GHSA-9h9m-rr67-9jpg"],"url":"https://o3.security/vulnerability/CVE-2026-35613","summary":"Path traversal in coursevault-preview due to improper base-directory boundary validation","details":"coursevault-preview is a utility for previewing course material files from a configured directory. coursevault-preview versions prior to 0.1.1 contain a path traversal vulnerability in the resolveSafe utility. The boundary check used String.prototype.startsWith(baseDir) on a normalized path, which does not enforce a directory boundary. An attacker who controls the relativePath argument to affected CoursevaultPreview methods may be able to read files outside the configured baseDir when a sibling directory exists whose name shares the same string prefix. This vulnerability is fixed in 0.1.1.","published":"2026-04-07T16:39:44.237Z","modified":"2026-08-07T11:51:00.405558700Z","cvss":{"score":5.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00141,"percentile":0.03886,"asOf":"2026-08-04"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"coursevault-preview","fixedVersion":"0.1.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35613.json"},{"type":"ADVISORY","url":"https://github.com/moritzmyrz/coursevault-preview/security/advisories/GHSA-9h9m-rr67-9jpg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35613"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:00.405558700Z"}}