CVE-2026-25733
7.3 · HIGHOverview
CVE-2026-25733 is a high-severity vulnerability affecting cern rucio. It was published on February 25, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. 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 Custom Rules function 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 and patches from cern. Update rucio to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cern | rucio | >= 0, < 35.8.3 | Affected |
References
Frequently Asked Questions
What is CVE-2026-25733?
CVE-2026-25733 is a high-severity vulnerability affecting cern rucio. It was published on February 25, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).
How severe is CVE-2026-25733?
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-25733?
Check the references section for vendor advisories and patches from cern. Update rucio to the latest patched version. 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-2026-25733?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-25733 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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