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Vulnerability record · CVE-2026-71209 · published 5 August 2026

CVE-2026-71209: Path traversal vulnerability

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 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.

7.5 CVSS 3.1 High EPSS 1.9% · top 20.8% CWE-22 · Path traversal Deferred
7.5CVSS 3.1 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
26 Aug 2026Last modified by NVD

Description

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 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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

LinkTags
https://github.com/advplyr/audiobookshelf
https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-pg8v-5jcv-wrvw
https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-pg8v-5jcv-wrvw

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Source: NIST National Vulnerability Database (record CVE-2026-71209), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.