How severe is CVE-2025-52880?

CVE-2025-52880 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2025-52880 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-52880?

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

Does CVE-2025-52880 have an EU (EUVD) identifier?

Yes. CVE-2025-52880 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19058.

When was CVE-2025-52880 published?

CVE-2025-52880 was published on 2025-06-24 and last updated on 2026-06-17.

CVE-2025-52880

CVE-2025-52880 is a medium-severity vulnerability with a CVSS 3.x base score of 4.2. 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-799.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19058
Weakness: CWE-799
Published: 2025-06-24
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-52880?: 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.
How severe is CVE-2025-52880?: CVE-2025-52880 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2025-52880 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-52880?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-52880 have an EU (EUVD) identifier?: Yes. CVE-2025-52880 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19058.
When was CVE-2025-52880 published?: CVE-2025-52880 was published on 2025-06-24 and last updated on 2026-06-17.

References

Other CWE-799 vulnerabilities

CVE-2025-54321 — Critical (CVSS 9.8): In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset password function, leading to an…
CVE-2025-29998 — High (CVSS 8.2): This vulnerability exists in the CAP back office application due to missing rate limiting on OTP requests in an API…
CVE-2026-7402 — High (CVSS 8.1): Improper Control of Interaction Frequency vulnerability in MeWare Software Development Inc. PDKS allows Flooding. This…
CVE-2026-24017 — High (CVSS 8.1): An Improper Control of Interaction Frequency vulnerability [CWE-799] vulnerability in Fortinet FortiWeb 8.0.0 through…
CVE-2021-41177 — High (CVSS 8.1): Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0,…
CVE-2026-30972 — High (CVSS 7.5): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior o…

Browse all CWE-799 vulnerabilities →