CVE-2024-42366

CRITICAL 9.0CVE-2024-42366 · Published 08/08/2024 · updated 17/06/2026

In short

CVE-2024-42366 is a CRITICAL (CVSS 9.0) vulnerability affecting vrcx (vrcx-team).
Chance of exploitation in the next 30 days (EPSS): 0.79%, higher than 56.4% of all vulnerabilities.
Fix: update to 2024.03.23 or later.

Package	Affected versions	Patched versions
vrcx vrcx-team	`< 2024.03.23`	`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.

References

vrcx-team/VRCX commit cd2387a · Patch
vrcx-team/VRCX security advisory · Vendor Advisory

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