Stored XSS Vulnerability in Rucio WebUI Affects Science Data Management
CVE-2026-25735

6.1MEDIUM

Key Information:

Vendor

Rucio

Status
Rucio
Vendor
CVE Published:
25 February 2026

What is CVE-2026-25735?

A stored Cross-Site Scripting (XSS) vulnerability exists in the Rucio WebUI that allows for attacker-controlled input to be stored and rendered without proper output encoding. This weakness can lead to unauthorized JavaScript execution within the user's session context when viewing affected pages, posing serious risks such as session token theft or unintended actions initiated by the attacker. Users are advised to upgrade to Rucio versions 35.8.3, 38.5.4, or 39.3.1 to mitigate this security risk.

Affected Version(s)

rucio < 35.8.3 < 35.8.3

rucio >= 36.0.0rc1, < 38.5.4 < 36.0.0rc1, 38.5.4

rucio >= 39.0.0rc1, < 39.3.1 < 39.0.0rc1, 39.3.1

References

https://github.com/rucio/rucio/security/advisories/GHSA-8...
x_refsource_CONFIRM
https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site...
x_refsource_MISC
https://github.com/rucio/rucio/releases/tag/35.8.3
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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