CVE-2026-44229: RT: Cross-Site Scripting via inline-served uploaded content
Vulnerability summary
CVE-2026-44229 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in bestpractical request_tracker. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 20-07-2026PublishedVulnerability first disclosed.
- 21-07-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- NVDNIST5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 22-09-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Bestpractical2 products
- request_tracker≥ 5.0.0, < 5.0.10 | ≥ 6.0.0, < 6.0.3
- rt≥ 6.0.0, < 6.0.3 | ≥ 5.0.0, < 5.0.10
Debian2 products
- request-tracker4< 4.4.6+dfsg-1.1+deb12u4
- request-tracker5< 5.0.3+dfsg-3~deb12u6 | < 5.0.7+dfsg-4+deb13u3 | < 5.0.10+dfsg-1
Ubuntu2 products
- request-tracker4All versions (No fix recorded)
- request-tracker5< 5.0.1+dfsg-1ubuntu1+esm2 | < 5.0.5+dfsg-2ubuntu0.1~esm2 | All versions (No fix recorded) | < 5.0.7+dfsg-6ubuntu0.1~esm1
3 vendors · 6 products
References
7 links- github.com/bestpractical/rt/security/advisories/GHSA-x576-pvwp-c2qvX Refsource CONFIRMVendor Advisory