Rucio up to 35.8.2/38.5.3/39.3.0 cross site scripting

Summaryinfo

A vulnerability was found in Rucio up to 35.8.2/38.5.3/39.3.0 and classified as problematic. The impacted element is an unknown function. The manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2026-25735. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Rucio up to 35.8.2/38.5.3/39.3.0. Affected is an unknown code. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Versions prior to 35.8.3, 38.5.4, and 39.3.1 have a stored Cross-Site Scripting (XSS) vulnerability in the Identity Name of the WebUI where attacker-controlled input is persisted by the backend and later rendered in the WebUI without proper output encoding. This allows arbitrary JavaScript execution in the context of the WebUI for users who view affected pages, potentially enabling session token theft or unauthorized actions. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-25735 since 02/05/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are needed for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 35.8.3, 38.5.4 or 39.3.1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Name

• Rucio

Version

• 35.8.0
• 35.8.1
• 35.8.2
• 38.5.0
• 38.5.1
• 38.5.2
• 38.5.3
• 39.0
• 39.1
• 39.2
• 39.3.0

Website

• Product: https://github.com/rucio/rucio/

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