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CVE-2026-1757

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

Published: Feb 2, 2026Updated: Apr 22, 2026 Sources: CVE List NVDCWE-401
6.2MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 90.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

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

AV:LAC:LPR:NUI:NS:UC:NI:NA:H
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
Open in CVSS calculator →

Weaknesses

CWE-401

Affected Products

Red Hat Hardened ImagesRed Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 6Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 7Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8Red Hat
On-premOS
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
and 3 more affected products View all →

Exploitability

Workaround Available

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 →

Timeline

Published
Feb 2, 2026
Last Updated
Apr 22, 2026

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