CVE-2025-52880 - Komga Vulnerable to Arbitrary Code Execution via Crafted EPUB File

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MEDIUM

Komga Vulnerable to Arbitrary Code Execution via Crafted EPUB File

Published Jun 24, 2025

4.2

MEDIUM

CVSS 3.1

EPSS 0.32%

Description

Komga is a media server for comics, mangas, BDs, magazines and eBooks. A Cross-Site Scripting (XSS) vulnerability has been discovered in versions 1.8.0 through 1.21.3 when serving EPUB resources, either directly from the API, or when reading using the epub reader. The vulnerability lets an attacker perform actions on the victim's behalf. When targeting an admin user, this can be combined with controlling a server-side command to achieve arbitrary code execution. For this vulnerability to be exploited, a malicious EPUB file has to be present in a Komga library, and subsequently accessed in the Epub reader by an admin user. Version 1.22.0 contains a patch for the issue.

Affected products

Vendor Gotson Product Komga Default
n/a
- Version
  >= 1.8.0, < 1.22.0
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Gotson

Komga

n/a

Version	Status	Constraints
>= 1.8.0, < 1.22.0	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-799

References (3)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-19058
Advisory
https://github.com/gotson/komga/commit/5f9cc449b7846ed2066752c72c9ce7b20c3a85a7
x_refsource_MISC
https://github.com/gotson/komga/security/advisories/GHSA-m7mm-6jxp-2m4x
x_refsource_CONFIRM

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-19058		Advisory
https://github.com/gotson/komga/commit/5f9cc449b7846ed2066752c72c9ce7b20c3a85a7		x_refsource_MISC
https://github.com/gotson/komga/security/advisories/GHSA-m7mm-6jxp-2m4x		x_refsource_CONFIRM