CVE-2026-1757 MEDIUM

CVE-2026-1757: Libxml2: memory leak leading to local denial of service in xmllint interactive shell

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-401
Published February 2, 2026
Last update April 22, 2026

CVSS base score

6.2/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.

Key dates

02Disclosure timeline

February 2, 2026 CVE published
April 22, 2026 Record updated