{"id":"CVE-2026-49338","aliases":["GHSA-hmgp-w9jm-vp95","GO-2026-5830"],"url":"https://o3.security/vulnerability/CVE-2026-49338","summary":"Subsonic API: any authenticated user can delete or read any other user's playlist (IDOR)","details":"gonic is a music streaming server / free-software subsonic server API implementation. Prior to version 0.21.0, the Subsonic API endpoints `/rest/deletePlaylist.view` and `/rest/getPlaylist.view` perform no per-resource authorization. Once authenticated as any user (admin or not), an attacker can delete any playlist owned by any other user (including admin) by passing its `id` and read the full contents (name, comment, song list) of any other user's **private** (non-public) playlist by passing its `id`. The Subsonic playlist `id` is `base64url(\"<userID>/<filename>.m3u\")`. Because filenames are user-supplied or time-derived and the `userID` is a small integer, IDs are guessable and frequently exposed (e.g. a previously-public playlist that was later made private still has the same ID). This breaks the multi-user trust boundary of gonic: a low-privileged user can wipe an administrator's curated playlists, and a user can exfiltrate any private playlist they obtain an ID for. The issue was fixed in commit `6dd71e6a3c966867ef8c900d359a7df75789f410`, which is part of version 0.21.0.","published":"2026-06-19T19:08:34.220Z","modified":"2026-08-12T03:51:25.723424967Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"},"epss":{"score":0.00288,"percentile":0.21153,"asOf":"2026-08-11"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"go.senan.xyz/gonic","fixedVersion":"0.21.0"}],"fix":{"url":"https://github.com/sentriz/gonic/commit/6dd71e6","label":"sentriz/gonic@6dd71e6"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49338.json"},{"type":"ADVISORY","url":"https://github.com/sentriz/gonic/security/advisories/GHSA-hmgp-w9jm-vp95"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49338"},{"type":"FIX","url":"https://github.com/sentriz/gonic/commit/6dd71e6"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:25.723424967Z"}}