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CVE-2026-25735

6.1 · MEDIUM

Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies.

Published Feb 25, 2026CWE-79EPSS 0.47%

Overview

CVE-2026-25735 is a medium-severity vulnerability. It was published on February 25, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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 Identity Name 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.htmlGitHubgithub.com/rucio/rucio/releases/tag/35.8.3GitHubgithub.com/rucio/rucio/releases/tag/38.5.4GitHubgithub.com/rucio/rucio/releases/tag/39.3.1GitHubgithub.com/rucio/rucio/security/advisories/GHSA-8wpv-6x3f-3rm5GitHubgithub.com/rucio/rucio/security/advisories/GHSA-8wpv-6x3f-3rm5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-25735?

CVE-2026-25735 is a medium-severity vulnerability. It was published on February 25, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2026-25735?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-25735?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-25735?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-25735 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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