CVE-2025-65516

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-04 · updated 2026-06-17
Weakness: CWE-79

Description

A stored cross-site scripting (XSS) vulnerability was discovered in Seafile Community Edition prior to version 13.0.12. When Seafile is configured with the Golang file server, an attacker can upload a crafted SVG file containing malicious JavaScript and share it using a public link. Opening the link triggers script execution in the victim's browser. This issue has been fixed in Seafile Community Edition 13.0.12.

Affected products

haiwen seafile-server: before 13.0.12 — fixed in 13.0.12

How to fix

Upgrade to a fixed version: haiwen seafile-server 13.0.12. Check the vendor advisory for mitigations.

References

https://gist.github.com/x0root/e5597622fede55b320d29a248dce01e6
https://manual.seafile.com/latest/changelog/server-changelog/

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