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TI-2026-49884 Aliases CVE-2026-71209GHSA-8885-9f28-m6p3

Path traversal in advplyr audiobookshelf

Priority HIGH 72CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

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 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02247 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
advplyraudiobookshelf2.19.1 – 2.35.1—No fix listedCNA
  • audiobookshelf Vendoradvplyr Affected 2.19.1 – 2.35.1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:audiobookshelf:audiobookshelf:*:*:*:*:*:*:*:*——advplyr
  • cpe:2.3:a:audiobookshelf:audiobookshelf:*:*:*:*:*:*:*:* Versions — — ·advplyr

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-71209
  2. 2026-10-03 Alias added: GHSA-8885-9f28-m6p3

References

Advisory 2

  • TI-2025-18874 Remote Authentication-Bypass can lead to server crash or limited information disclosure due to faulty pattern matching CVSS 3.1HIGH 8.2
  • TI-2025-35683 Audiobookshelf vulnerable to OIDC token exfiltration and account takeover CVSS 3.1HIGH 8.8
  • TI-2025-29079 Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload CVSS 4.0MEDIUM 6.9
  • TI-2023-25761 Audiobookshelf Server-Side Request Forgery and Arbitrary File Read Vulnerability CVSS 3.1HIGH 8.1
  • TI-2026-31089 Audiobookshelf: Cross-library file exfiltration via unscoped bulk download endpoint CVSS 3.1MEDIUM 6.5
  • TI-2024-29391 Path Traversal in audiobookshelf CVSS 3.1MEDIUM 6.3
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences