CVE-2026-44231
Received Received - Intake

RT Information Disclosure via REST 2.0 API

Vulnerability report for CVE-2026-44231, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-07-20

Last updated on: 2026-07-20

Assigner: GitHub, Inc.

Description

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 β€” including users with administrative privileges β€” 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.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-07-20
Last Modified
2026-07-20
Generated
2026-07-21
AI Q&A
2026-07-20
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
bestpractical rt to 5.0.10 (exc)
bestpractical rt From 6.0.0 (inc) to 6.0.3 (exc)
bestpractical rt 5.0.10
bestpractical rt 6.0.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

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Executive Summary

CVE-2026-44231 is an information disclosure and privilege escalation vulnerability in RT, an issue tracking system. It affects versions before 5.0.10 and 6.0.0 to 6.0.2. A non-admin user can exploit the REST 2.0 API to steal authentication credentials of other users, including admins, and access their data via feed endpoints. The exploit also invalidates existing feed URLs by rotating credentials.

Detection Guidance

Check RT version with: curl -s https://your-rt-instance/ | grep -i 'RT version' or check via admin interface. Inspect network traffic for unauthorized access to REST 2.0 users endpoint or feed URLs. Review logs for unusual requests to /REST/2.0/users or feed endpoints like /NoAuth/feed/user.

Impact Analysis

An attacker could gain unauthorized access to sensitive data by impersonating other users, including administrators. This could lead to data breaches, unauthorized modifications, or system misuse. The vulnerability also disrupts legitimate access by invalidating feed URLs, causing service disruptions.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR and HIPAA due to unauthorized data access and exposure. GDPR requires protecting personal data, while HIPAA mandates safeguarding protected health information. A breach could result in legal penalties, fines, and reputational damage.

Mitigation Strategies

Upgrade RT to version 5.0.10 or 6.0.3 immediately. As a temporary workaround, block access to the REST 2.0 users endpoint and RSS/iCal feed endpoints at the web server level until upgrade is complete.

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