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CVE-2025-26434

libxml2: Libxml2 out of bounds read

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 6, 2025

Updated · November 2, 2026

Description

An out of bounds read flaw has been discovered in libxml2. This flaw could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE-120 · Buffer Copy without Checking Size of Input