Seafile 11.0.18-Pro/12.0.10/12.0.10-Pro notification/activities cross site scripting

Summaryinfo

A vulnerability has been found in Seafile 11.0.18-Pro/12.0.10/12.0.10-Pro and classified as problematic. Affected is an unknown function. The manipulation of the argument notification/activities leads to cross site scripting. This vulnerability is uniquely identified as CVE-2025-45091. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Seafile 11.0.18-Pro/12.0.10/12.0.10-Pro and classified as problematic. This issue affects an unknown part. The manipulation of the argument notification/activities with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Seafile versions 11.0.18-Pro, 12.0.10, and 12.0.10-Pro are vulnerable to a stored Cross-Site Scripting (XSS) attack. An authenticated attacker can exploit this vulnerability by modifying their username to include a malicious XSS payload in notification and activities.

The advisory is shared at plus.seafile.com. The identification of this vulnerability is CVE-2025-45091 since 04/22/2025. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are required for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 265226 (Linux Distros Unpatched Vulnerability : CVE-2025-45091), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (265226). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Seafile

Version

• 11.0.18-Pro
• 12.0.10
• 12.0.10-Pro

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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