CVE-2026-27963 Audiobookshelf has Stored XSS in Tooltip.vue via Audiobook Metadata
Attackers with library modification privileges can execute arbitrary JavaScript in victim browsers via malicious metadata, leading to session hijacking.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-27963?
CVE-2026-27963 is a medium-severity cross-site scripting vulnerability in advplyr audiobookshelf, published on 26 Feb 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Audiobookshelf is a self-hosted audiobook and podcast server. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 2.32.0 of the Audiobookshelf web application that allows arbitrary JavaScript execution through malicious library metadata. Attackers with library modification privileges can execute code in victim users' browsers, potentially leading to session hijacking and data exfiltration. Version 2.32.0 contains a patch for the issue.
Weakness: CWE-79
Which versions are affected by CVE-2026-27963?
It affects 1 product.
Products include Audiobookshelf Audiobookshelf.
How do I fix CVE-2026-27963?
No fix has been published for CVE-2026-27963 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-27963 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27963 exists.
Other vulnerabilities in advplyr audiobookshelf
- CVE-2025-57800 Audiobookshelf vulnerable to OIDC token exfiltration and account takeover
- CVE-2025-25205 Remote Authentication-Bypass can lead to server crash or limited information disclosure due to faulty pattern matching
- CVE-2023-47619 Audiobookshelf Server-Side Request Forgery and Arbitrary File Read Vulnerability
- CVE-2023-47624 Audiobookshelf Arbitrary File Read Vulnerability
- CVE-2025-46338 Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload
Sources
Also known as GHSA-69cp-m725-wf78.