What is GHSA-wgf4-w3hh-3mvm?

GHSA-wgf4-w3hh-3mvm is a security advisory published by GitHub Security Advisories with High severity. A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ...

Which CVE IDs does GHSA-wgf4-w3hh-3mvm cover?

GHSA-wgf4-w3hh-3mvm covers the following CVE IDs: CVE-2026-93520. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-wgf4-w3hh-3mvm?

GHSA-wgf4-w3hh-3mvm has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-wgf4-w3hh-3mvmHighCVSS 7.8

A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ...

Vendor

GitHub Security Advisories

Published

October 28, 2026

Last Modified

October 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-93520 →

📋 Description

A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 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-2026-93520
https://gitlab.freedesktop.org/xorg/xserver/-/commit/b941a473e06f26a407a9adb15759be79f7418e86
https://github.com/advisories/GHSA-wgf4-w3hh-3mvm