Rucio WebUI Vulnerable to Stored Cross-site Scripting (XSS) through Custom Rule Function

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0031, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:01 UTC First seen by agentprime
2. 31 Oct 2026, 15:01 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-rwj9-7j48-9f7q
• OSV: GHSA-rwj9-7j48-9f7q
• github.com/rucio/rucio/security/advisories/GHSA-rwj9-7j48-9f7q
• nvd.nist.gov/vuln/detail/CVE-2026-25733
• cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html
• github.com/rucio/rucio
• github.com/rucio/rucio/releases/tag/35.8.3
• github.com/rucio/rucio/releases/tag/38.5.4
• github.com/rucio/rucio/releases/tag/39.3.1

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.