Stored Cross-Site Scripting Vulnerability in Rucio by Rucio Team
CVE-2026-25734

6.1MEDIUM

Key Information:

Vendor

Rucio

Status
Rucio
Vendor
CVE Published:
25 February 2026

What is CVE-2026-25734?

Rucio, a software framework designed for managing large volumes of scientific data, contains a stored XSS vulnerability within its WebUI. This flaw allows attacker-controlled input to be saved by the backend and rendered without adequate output encoding. As a result, users who view affected pages may experience arbitrary JavaScript execution, which can lead to serious security risks such as session token theft or unauthorized actions. The vulnerability is resolved in versions 35.8.3, 38.5.4, and 39.3.1.

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-h...
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

.