CVE-2026-1757

Libxml2: memory leak leading to local denial of service in xmllint interactive shell

Published: Feb 2, 2026Updated: Sep 1, 2026 Sources: CVE List NVDCWE-401

6.2MEDIUM

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-401

Affected Products

Red Hat

commercial·US

Red Hat Hardened ImagesOn-premOS

Operating Systems / linux-distro

Red Hat Enterprise Linux 10On-premOS

Operating Systems / linux-distro

Red Hat JBoss Core ServicesOn-premWeb App

Enterprise Software / itsm-monitoring

Red Hat OpenShift Container Platform 4SaaSSaaS Service

Cloud & SaaS / container-orchestration

and 4 more affected products View all →

Exploitability

Workaround Available

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References

https://access.redhat.com/errata/RHSA-2026:7519

access.redhat.com

https://access.redhat.com/security/cve/CVE-2026-1757

access.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2435940

bugzilla.redhat.com

and 1 more references View all →

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