CVE-2025-52880
MEDIUMDescription
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 to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 20% of all known CVEs.
References
Related Vulnerabilities
Other CWE-799 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-35621 | High | 7.5 | 2.3% | - | - |
| CVE-2016-6543 | Medium | 5.9 | 2.2% | - | - |
| CVE-2021-37910 | Low | 3.7 | 2.1% | - | Fix |
| CVE-2021-32705 | Medium | 5.3 | 1.7% | - | Fix |
| CVE-2021-32703 | Medium | 5.3 | 1.5% | - | Fix |
| CVE-2021-41177 | High | 8.1 | 1.5% | - | Fix |
Common questions
How do I fix CVE-2025-52880?
No published fix for CVE-2025-52880 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2025-52880 being actively exploited?
Not that we know of. CVE-2025-52880 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.28% is the estimated probability that it will be exploited in the next 30 days. That is higher than 20% of all scored CVEs.
How severe is CVE-2025-52880?
CVE-2025-52880 has a CVSS v3 base score of 4.2, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-06-26.