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CVE-2026-44227: RT: Reflected Cross-Site Scripting via URL parameters

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-20 · updated 2026-10-24
• Weakness: CWE-79

Description

RT is an open source, enterprise-grade issue and ticket tracking system. Versions 6.0.0 and above, prior to 6.0.3 contain a reflected Cross-Site Scripting (XSS) vulnerability. An attacker who can induce an authenticated RT user to visit a crafted URL can execute arbitrary JavaScript in that user's browser session. There are no effective workarounds. Avoid following untrusted RT URLs. This issue has been fixed in version 6.0.3.

Affected products

• Best Practical Request Tracker: from 6.0.0 before 6.0.3 — fixed in 6.0.3

How to fix

Upgrade to a fixed version: Best Practical Request Tracker 6.0.3. Check the vendor advisory for mitigations.

References

• https://github.com/bestpractical/rt/releases/tag/rt-6.0.3
• https://github.com/bestpractical/rt/security/advisories/GHSA-7742-fhq7-ggv9

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