CVE-2026-25734 MEDIUM

CVE-2026-25734: Rucio WebUI has Stored Cross-site Scripting (XSS) in RSE Metadata

Vendor Rucio
Product rucio
Weakness CWE-79 · XSS
Published February 25, 2026
Last update February 26, 2026

CVSS base score

6.1/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

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 RSE metadata 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.

Key dates

02Disclosure timeline

February 25, 2026 CVE published
February 26, 2026 Record updated