XSS in Bestpractical Request Tracker
CVE-2026-44229
RT is an open source, enterprise-grade issue and ticket tracking system. Versions 5.0.0 and 6.0.0 and above, prior to both 5.0.10 and 6.0.3 contain a Cross-Site Scripting (XSS) vulnerability where uploaded content is served inline rather than as an attachment. An authenticated user who can upload content can include JavaScript in the upload that will execute in the browser session of any RT user who later views or downloads it. This issue has been fixed in versions 5.0.10 and 6.0.3.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Bestpractical Request Tracker
- Bestpractical Rt — versions >= 6.0.0, < 6.0.3, >= 5.0.0, < 5.0.10
Weakness classification (CWE)
References
- github.com/bestpractical/rt/security/advisories/GHSA-x576-pvwp-c2qv (Vendor Advisory)
- github.com/bestpractical/rt/releases/tag/rt-6.0.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-44229?
- CVE-2026-44229 is a medium-severity vulnerability in Bestpractical Request Tracker, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-20.
- How severe is CVE-2026-44229?
- Medium severity. CVSS v3 base score is 5.4 out of 10.