CVE & CISA-KEV Catalog

CVE-2026-25734

MEDIUM
6.1
CVSS v3
NVD

Description

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.

CWE-79Cross-Site Scripting (XSS)CWE-1004

How to fix

Remediation Available
rucioNVD
Affected:>= 39.0.0, < 39.3.1Fixed in:39.3.1CVE-2026-25734derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityNone

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

Exploit Intelligence

0.29%probability of exploitation in 30 days
20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Exploit1
Embed a live status badge for CVE-2026-25734
CVE-2026-25734 severity badge

Markdown

[![CVE-2026-25734](https://tridentstack.com/cve/badge/CVE-2026-25734.svg)](https://tridentstack.com/cve/CVE-2026-25734)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-25734"><img src="https://tridentstack.com/cve/badge/CVE-2026-25734.svg" alt="CVE-2026-25734"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-02-27.