# CVE-2026-34003

> Vulnerability · severity: **HIGH** (CVSS 7.8).

## Description

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.

## Key facts

- **CVE ID:** CVE-2026-34003
- **Published:** 2026-04-23
- **CVSS severity:** HIGH
- **CVSS base score:** 7.8
- **CWE codes:** CWE-125

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34003

## Citation

> AI Analytics. CVE-2026-34003. Retrieved 2026-07-20 from https://api.ai-analytics.org/cve/CVE-2026-34003. Derived from NIST NVD. Licensed CC0.

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