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Fencer Vulns
critical 9.1

CVE-2026-44231 json

RT: Privilege escalation and information disclosure via REST 2.0 user collection endpoint

published 2026-07-20 3 mo ago modified 2026-10-24 15 d ago also EUVD-2026-46079

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Patch / fix

  • bestpractical request_tracker 5.0.10, 6.0.3
  • bestpractical rt 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-2026-44231

  • 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-2026-44231

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-2026-44231 updated cvss 9.1

rt: privilege escalation and information disclosure via REST 2.0 user collection endpoint

  • 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
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Affected products

  • bestpractical rt

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-269 Improper Privilege Management
  • CWE-863 Incorrect Authorization

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.