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Public proof of concept

CVE-2026-71209

A public proof of concept exists; no exploitation attested.

  • Published2026-08-05
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-08-0508:16CVE publishedNVD

Versions per branch

Products declared by the CNA

As TuranSec, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • advplyr audiobookshelfother versions: unknown
    Affected
    • ≥ 2.19.1, ≤ 2.35.1no fix statedcustom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-10

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-71209 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-09 09:28 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2026-08-05
Last Modified
2026-10-24
NVD status
Deferred
GitHub Advisory
GHSA-8885-9f28-m6p3

Frequently asked questions

What is CVE-2026-71209?

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.

Is CVE-2026-71209 actively exploited?

A proof-of-concept exploit exists for CVE-2026-71209, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-71209?

CVE-2026-71209 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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