What is GHSA-2mch-vxw7-ccc2?

GHSA-2mch-vxw7-ccc2 is a security advisory published by GitHub Security Advisories with High severity. A heap buffer overflow caused by a XIPassiveUngrabDevice request with an out-of-range modifier...

Which CVE IDs does GHSA-2mch-vxw7-ccc2 cover?

GHSA-2mch-vxw7-ccc2 covers the following CVE IDs: CVE-2026-93523. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-2mch-vxw7-ccc2?

GHSA-2mch-vxw7-ccc2 has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-2mch-vxw7-ccc2HighCVSS 7.8

A heap buffer overflow caused by a XIPassiveUngrabDevice request with an out-of-range modifier...

Vendor

GitHub Security Advisories

Published

October 28, 2026

Last Modified

October 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-93523 →

📋 Description

A heap buffer overflow caused by a XIPassiveUngrabDevice request with an out-of-range modifier value in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-93523
https://gitlab.freedesktop.org/xorg/xserver/-/commit/37a1847a60c6799aecf163a5cfa40077a9002675
https://github.com/advisories/GHSA-2mch-vxw7-ccc2