# 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.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **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 available:** No
- **Published:** 26 Feb 2026
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-69cp-m725-wf78

## 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 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-27963?

It affects 1 product.


Products: 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.

## 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](https://insights.sbomify.com/CVE-2025-57800/): Audiobookshelf vulnerable to OIDC token exfiltration and account takeover (high 8.8)
- [CVE-2025-25205](https://insights.sbomify.com/CVE-2025-25205/): Remote Authentication-Bypass can lead to server crash or limited information disclosure due to faulty pattern matching (high 8.2)
- [CVE-2023-47619](https://insights.sbomify.com/CVE-2023-47619/): Audiobookshelf Server-Side Request Forgery and Arbitrary File Read Vulnerability (high 8.1)
- [CVE-2023-47624](https://insights.sbomify.com/CVE-2023-47624/): Audiobookshelf Arbitrary File Read Vulnerability (high 7.5)
- [CVE-2025-46338](https://insights.sbomify.com/CVE-2025-46338/): Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27963 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27963 exists.

Affected product: advplyr audiobookshelf. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-27963/ (Markdown: https://insights.sbomify.com/CVE-2026-27963/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27963
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27963
- OSV: https://osv.dev/vulnerability/CVE-2026-27963

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-27963/
Summaries are generated and may contain mistakes; the official description above is the record.