CVE-2026-27973: Audiobookshelf is a self-hosted audiobook and podcast server

Q: How do I fix CVE-2026-27973?

audiobookshelf: upgrade to 2.12.0; audiobookshelf mobile app: upgrade to 0.12.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-27973 being exploited?

CVE-2026-27973 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27973 affect?

CVE-2026-27973 affects audiobookshelf, audiobookshelf mobile app. Severity is medium (CVSS 4.0). 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 thro

Q: How urgent is CVE-2026-27973?

Priority 16/100. No elevated risk signals yet.

Routine

MEDIUM 4.0UPGRADEUPGRADE

CVE-2026-27973 is a medium-severity flaw (CVSS 4.0) affecting audiobookshelf, audiobookshelf mobile app. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.0 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: audiobookshelf

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-26 02:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

audiobookshelf audiobookshelf UPGRADE

Affected: < 2.12.0

Fixed in: 2.12.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy audiobookshelf || rpm -q audiobookshelf || audiobookshelf --version

2. UPGRADE to 2.12.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade audiobookshelf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade audiobookshelf

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

audiobookshelf audiobookshelf mobile app UPGRADE

Affected: < 0.12.0

Fixed in: 0.12.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy audiobookshelf-mobile-app || rpm -q audiobookshelf-mobile-app || audiobookshelf-mobile-app --version

2. UPGRADE to 0.12.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade audiobookshelf-mobile-app

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade audiobookshelf-mobile-app

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27973?

audiobookshelf: upgrade to 2.12.0; audiobookshelf mobile app: upgrade to 0.12.0. Exact commands for each OS are on this page.

Is CVE-2026-27973 being exploited?

CVE-2026-27973 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27973 affect?

CVE-2026-27973 affects audiobookshelf, audiobookshelf mobile app. Severity is medium (CVSS 4.0). 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 thro

How urgent is CVE-2026-27973?

Priority 16/100. No elevated risk signals yet.

Related CVEs

CVE-2026-27963 MEDIUM 4.8 UPGRADE Audiobookshelf is a self-hosted audiobook and podcast server
CVE-2025-57800 HIGH 8.8 UPGRADE Audiobookshelf is an open-source self-hosted audiobook server
CVE-2025-46338 MEDIUM 6.1 UPGRADE Audiobookshelf is a self-hosted audiobook and podcast server
CVE-2025-25205 HIGH 8.2 UPGRADE Audiobookshelf is a self-hosted audiobook and podcast server
CVE-2024-43797 MEDIUM 6.3 UPGRADE audiobookshelf is a self-hosted audiobook and podcast server

References

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