Vulnerability · Published Oct 30, 2026 · Assigned by CERT-PL
CVE-2026-105454Stored XSS via crafted URLs in HTML ticket content in Request Tracker
Medium 5.3
In plain English
A medium-severity cross-site scripting in Request Tracker from Best Practical Solutions. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Official description
RT's automatic link creation for URLs in HTML ticket content does not HTML-escape the URL it places in the link. A URL crafted to break out of the link's address can add a script that runs when the ticket history is displayed, with no further action by the viewer. Anyone who can add HTML content to a ticket can plant it. That includes an unauthenticated sender of HTML email to any queue that grants CreateTicket or ReplyToTicket to Everyone, which is routine for a queue that accepts mail from the public. The script runs in the session of any user who views the ticket, and can act in RT with that user's authority. This issue was fixed in version 5.0.11 and 6.0.4
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | request-tracker5 | no fix listed | DEBIAN-CVE-2026-105454 |
| Debian:13 | request-tracker5 | no fix listed | DEBIAN-CVE-2026-105454 |
| Debian:14 | request-tracker5 | no fix listed | DEBIAN-CVE-2026-105454 |
| Ubuntu:26.10 | request-tracker5 | no fix listed | UBUNTU-CVE-2026-105454 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Best Practical Solutions | Request Tracker | 5.0.0 – before 5.0.116.0.0 – before 6.0.4 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
References
- https://cert.pl/en/posts/2026/10/CVE-2026-105454 third-party-advisory
- https://requesttracker.com/request-tracker/ product