CVE-2026-25136

HIGH

Rucio < 35.8.3 - Reflected Cross-Site Scripting via WebUI ExceptionMessage

Title source: llm
STIX 2.1

Description

Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. A reflected Cross-site Scripting vulnerability was located in versions prior to 35.8.3, 38.5.4, and 39.3.1 in the rendering of the ExceptionMessage of the WebUI 500 error which could allow attackers to steal login session tokens of users who navigate to a specially crafted URL. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue.

Scores

CVSS v3 8.1
EPSS 0.0008
EPSS Percentile 23.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79 CWE-1004
Status published
Products (2)
cern/rucio < 35.8.3
pypi/rucio-webui 0 - 35.8.3PyPI
Published Feb 25, 2026
Tracked Since Feb 26, 2026