Auth bypass in Bestpractical Request Tracker
CVE-2026-44231
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Bestpractical Request Tracker
- Bestpractical Rt — versions < 5.0.10, >= 6.0.0, < 6.0.3
Weakness classification (CWE)
References
- github.com/bestpractical/rt/security/advisories/GHSA-7rx2-x357-wv74 (Mitigation, Vendor Advisory)
- github.com/bestpractical/rt/releases/tag/rt-6.0.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-44231?
- CVE-2026-44231 is a critical-severity vulnerability in Bestpractical Request Tracker, classified under Information Disclosure. CVSS score: 9.1/10. Published 2026-07-20.
- How severe is CVE-2026-44231?
- Critical severity. CVSS v3 base score is 9.1 out of 10.