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Fencer Vulns
medium 6.1

CVE-2026-6841 json

Reflected XSS in Request Tracker

published 2026-05-21 5 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-31269

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

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.

Patch / fix

  • Best Practical Request Tracker 5.0.10, 6.0.3
  • request-tracker4 Debian 12 4.4.6+dfsg-1.1+deb12u4
  • request-tracker5 Debian 12 5.0.3+dfsg-3~deb12u6
  • request-tracker5 Debian 13 5.0.7+dfsg-4+deb13u3
  • request-tracker5 Debian 14 5.0.10+dfsg-1

debian advisories DEBIAN-CVE-2026-6841

  • request-tracker5 Ubuntu Pro 22.04 LTS 5.0.1+dfsg-1ubuntu1+esm2
  • request-tracker5 Ubuntu Pro 24.04 LTS 5.0.5+dfsg-2ubuntu0.1~esm2
  • request-tracker5 Ubuntu Pro 26.04 LTS 5.0.7+dfsg-6ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2026-6841

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-6841 updated cvss 6.1

rt: reflected cross-site scripting (XSS) vulnerability via the "Page" parameter in GET requests

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 5.1 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
CNA 4.0 5.1 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Best Practical Request Tracker

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.