{"id":"CVE-2026-90774","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-90774","summary":"rustypaste before 0.18.1 validates the destination path before applying the optional custom filename HTTP header, allowing attackers to bypass directory-escape checks. Attackers can…","details":"rustypaste before 0.18.1 validates the destination path before applying the optional custom filename HTTP header, allowing attackers to bypass directory-escape checks. Attackers can supply path traversal sequences in the filename header to write files outside the configured upload directory to arbitrary locations.","published":"2026-09-13T11:17:02.163","modified":"2026-09-13T11:17:02.163","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/orhun/rustypaste/commit/ac05d552596af4a8429d80f30d11f67117ce02c8","label":"orhun/rustypaste@ac05d55"},"references":[{"type":"WEB","url":"https://github.com/orhun/rustypaste"},{"type":"WEB","url":"https://github.com/orhun/rustypaste/blob/v0.18.0/src/paste.rs"},{"type":"WEB","url":"https://github.com/orhun/rustypaste/commit/ac05d552596af4a8429d80f30d11f67117ce02c8"},{"type":"WEB","url":"https://github.com/orhun/rustypaste/issues/622"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/rustypaste-before-0.18.1-path-traversal-via-filename-header"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-13T11:17:02.163"}}