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Vulnerability · Published May 21, 2026 · Assigned by CERT-PL

CVE-2026-6841Reflected XSS in Request Tracker

Medium 5.1

In plain English

A medium-severity cross-site scripting in Request Tracker from Best Practical. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.1Medium
Exploit odds (30 days)0.2%top 85.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Request Tracker is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the "Page" parameter in GET requests. An attacker can craft a URL that, when opened, results in arbitrary JavaScript execution in the victim’s browser. This vulnerability affects versions from 5.0.4 up to 5.0.9 and from 6.0.0 up to 6.0.2.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12request-tracker44.4.6+dfsg-1.1+deb12u4DEBIAN-CVE-2026-6841
Debian:12request-tracker55.0.3+dfsg-3~deb12u6DEBIAN-CVE-2026-6841
Debian:13request-tracker55.0.7+dfsg-4+deb13u3DEBIAN-CVE-2026-6841
Debian:14request-tracker55.0.10+dfsg-1DEBIAN-CVE-2026-6841
Ubuntu:22.04:LTSrequest-tracker4no fix listedUBUNTU-CVE-2026-6841
Ubuntu:24.04:LTSrequest-tracker4no fix listedUBUNTU-CVE-2026-6841
Ubuntu:25.10request-tracker4no fix listedUBUNTU-CVE-2026-6841
Ubuntu:26.04:LTSrequest-tracker4no fix listedUBUNTU-CVE-2026-6841
Ubuntu:25.10request-tracker5no fix listedUBUNTU-CVE-2026-6841

Affected products (as reported)

VendorProductVersions
Best Practical Request Tracker 5.0.4 – before 5.0.106.0.0 – before 6.0.3

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References