{"id":"CVE-2026-49340","summary":"gonic has arbitrary file write in createPlaylist: any authenticated user can write playlist M3U content to attacker-controlled path on the host","details":"gonic is a music streaming server / free-software subsonic server API implementation. Prior to version 0.21.0, a logic error in `ServeCreateOrUpdatePlaylist` allows any authenticated Subsonic user (including non-admin) to write playlist M3U content to an attacker-controlled absolute filesystem path on the gonic host, and to create intermediate directories with `0o777` permissions. The bug is independent of CVE-2026-49338 and CVE-2026-49339. It is an unreachable guard clause combined with no path containment in `Store.Write`. Version 0.21.0 patches the issue.","aliases":["GHSA-4gxv-p5g5-j7w7","GO-2026-5827"],"modified":"2026-07-31T18:31:32.115141515Z","published":"2026-06-19T19:11:20.305Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-22","CWE-697","CWE-732"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49340.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49340.json"},{"type":"ADVISORY","url":"https://github.com/sentriz/gonic/security/advisories/GHSA-4gxv-p5g5-j7w7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49340"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sentriz/gonic","events":[{"introduced":"0"},{"fixed":"a45ecce5186cdca7f699cf4e623c930fcd88ec3e"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.21.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.20.1","v0.20.0","v0.19.0","v0.18.0","v0.17.0","v0.16.4","v0.16.3","v0.16.2","v0.16.1","v0.16.0","v0.16.0-rc1","v0.15.2","v0.15.1","v0.15.0","v0.14.0","v0.13.1","v0.13.0","v0.12.3","v0.12.2","v0.12.1","v0.12.0","v0.11.1","v0.11.0","v0.10.3","v0.10.2","v0.10.1","v0.10.0","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.4","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.2","v0.5.1","v0.5.0","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.0","v0.2.1","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49340.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"}]}