{"id":"CVE-2026-71209","title":"audiobookshelf's authentication-exemption check (server/routers/Auth.js) matches unauthenticated-allowed GET routes against req.path via a regex requiring a literal /items/:id/cover or /authors/:id/image shape, where req.path retains %2F…","summary":"audiobookshelf's authentication-exemption check (server/routers/Auth.js) matches unauthenticated-allowed GET routes against req.path via a regex requiring a literal /items/:id/cover or /authors/:id/image shape, where req.path retains %2F…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-22"],"published":"2026-08-05","updated":"2026-08-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-71209","references":[{"url":"https://github.com/advplyr/audiobookshelf","label":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"},{"url":"https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-pg8v-5jcv-wrvw","label":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"},{"url":"https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-pg8v-5jcv-wrvw","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","exploit-available"],"epss":0.02005,"epssPercentile":0.79682,"ingestedAt":"2026-08-10T12:39:48.422Z","exploits":{"nuclei":["CVE-2026-71209"],"checkedAt":"2026-09-21T15:30:22.410Z"},"exploitAvailable":true,"slug":"CVE-2026-71209","body":"## Overview\n\naudiobookshelf's authentication-exemption check (server/routers/Auth.js) matches unauthenticated-allowed GET routes against req.path via a regex requiring a literal /items/:id/cover or /authors/:id/image shape, where req.path retains %2F sequences URL-encoded. CacheManager.handleCoverCache then joins this decoded value into a cache file path and streams the result before any database-backed ownership check.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":41.3,"likelihood":0.4,"exploitation":12,"ransomware":0},"changes":[{"seq":5457,"id":"CVE-2026-71209","ts":1788887284205,"field":"exploit_available","old":"false","new":"true"},{"seq":4340,"id":"CVE-2026-71209","ts":1788886398213,"field":"exploit_available","old":"true","new":"false"},{"seq":3069,"id":"CVE-2026-71209","ts":1788883061392,"field":"exploit_available","old":"false","new":"true"},{"seq":2098,"id":"CVE-2026-71209","ts":1788882466284,"field":"exploit_available","old":"true","new":"false"},{"seq":1164,"id":"CVE-2026-71209","ts":1788881903051,"field":"exploit_available","old":"false","new":"true"}]}