CVE-2026-71209 Details.
Audiobookshelf - Authentication Bypass
Atlas does not check this one. Needs a scripted sequence.
This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one.
About CVE-2026-71209. What It Means.
Audiobookshelf contains a path traversal caused by improper authentication-exemption check on URL-encoded paths in server/routers/Auth.js, letting unauthenticated attackers read arbitrary files, exploit requires crafted URL with encoded traversal sequences.
Affected Product. What Is Hit.
- Vendor
- audiobookshelf
- Product
- Audiobookshelf
FAQ
Common Questions.
Audiobookshelf - Authentication Bypass. Audiobookshelf contains a path traversal caused by improper authentication-exemption check on URL-encoded paths in server/routers/Auth.js, letting unauthenticated attackers read arbitrary files, exploit requires crafted URL with encoded traversal sequences.
No. This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one. The facts about CVE-2026-71209 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-71209 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Audiobookshelf to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-71209. Atlas does not run a check for it, so nothing here says whether a particular site is affected.