How severe is CVE-2026-27974?

CVE-2026-27974 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-27974 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27974?

CVE-2026-27974 affects Audiobookshelf Audiobookshelf Mobile App. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27974?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-27974 have an EU (EUVD) identifier?

Yes. CVE-2026-27974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8831.

When was CVE-2026-27974 published?

CVE-2026-27974 was published on 2026-02-26 and last updated on 2026-06-17.

CVE-2026-27974

CVE-2026-27974 is a medium-severity vulnerability in Audiobookshelf Audiobookshelf Mobile App with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8831
Weakness: CWE-79
Affected product: Audiobookshelf Audiobookshelf Mobile App
Published: 2026-02-26
Last modified: 2026-06-17

Description

Audiobookshelf is a self-hosted audiobook and podcast server. A 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 (or control over a malicious podcast RSS feed) can execute code in victim users' WebViews, potentially leading to session hijacking, data exfiltration, and unauthorized access to native device APIs. audiobookshelf-app version 0.12.0-beta fixes the issue.

Frequently asked questions

What is CVE-2026-27974?: Audiobookshelf is a self-hosted audiobook and podcast server. A 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 (or control over a malicious podcast RSS feed) can execute code in victim users' WebViews, potentially leading to session hijacking, data exfiltration, and unauthorized access to native device APIs. audiobookshelf-app version 0.12.0-beta fixes the issue.
How severe is CVE-2026-27974?: CVE-2026-27974 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-27974 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27974?: CVE-2026-27974 affects Audiobookshelf Audiobookshelf Mobile App. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27974?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27974 have an EU (EUVD) identifier?: Yes. CVE-2026-27974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8831.
When was CVE-2026-27974 published?: CVE-2026-27974 was published on 2026-02-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:audiobookshelf:audiobookshelf_mobile_app:*:*:*:*:*:*:*:*

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