Memory leak in Libxml2 - CVE-2026-1757

Vulnerability identifier: #VU123115

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-1757

CWE-ID: CWE-401

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the interactive shell of the xmllint utility when handling whitespaces. A remote attacker can force the application to leak memory and perform denial of service attack.

Libxml2
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
Python 3 Module
Basesystem Module
openSUSE Leap
openEuler
Anolis OS
libxml2-2-debuginfo-32bit
libxml2-2
libxml2-debugsource
libxml2-tools
python-libxml2-debuginfo
python-libxml2-debugsource
libxml2-doc
libxml2-devel
libxml2-2-32bit
python-libxml2
libxml2-tools-debuginfo
libxml2-2-debuginfo
python3-libxml2-python
python3-libxml2-python-debuginfo
python-libxml2-python-debugsource
libxml2-python-debugsource
python311-libxml2-debuginfo
python3-libxml2
python311-libxml2
python3-libxml2-debuginfo
libxml2-2-32bit-debuginfo
libxml2-devel-32bit
libxml2-devel-64bit
libxml2-2-64bit-debuginfo
libxml2-2-64bit
libxml2
libxml2-static
libxml2-help
libxml2-debuginfo

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

libxml2-2-debuginfo-32bit - update to 2.9.4-46.99.1
libxml2-2 - addressed in versions 2.9.4-46.99.1, 2.9.7-150000.3.94.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
libxml2-debugsource - addressed in versions 2.9.4-46.99.1, 2.9.7-150000.3.94.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
libxml2-tools - addressed in versions 2.9.4-46.99.1, 2.9.7-150000.3.94.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
python-libxml2-debuginfo - update to 2.9.4-46.99.1
python-libxml2-debugsource - update to 2.9.4-46.99.1
libxml2-doc - addressed in versions 2.9.4-46.99.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1
libxml2-devel - addressed in versions 2.9.4-46.99.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
libxml2-2-32bit - addressed in versions 2.9.4-46.99.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
python-libxml2 - update to 2.9.4-46.99.1
libxml2-tools-debuginfo - addressed in versions 2.9.4-46.99.1, 2.9.7-150000.3.94.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
libxml2-2-debuginfo - addressed in versions 2.9.4-46.99.1, 2.9.7-150000.3.94.1, 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
python3-libxml2-python - update to 2.9.7-150000.3.94.1
python3-libxml2-python-debuginfo - update to 2.9.7-150000.3.94.1
python-libxml2-python-debugsource - update to 2.9.7-150000.3.94.1
libxml2-python-debugsource - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
python311-libxml2-debuginfo - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
python3-libxml2 - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
python311-libxml2 - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
python3-libxml2-debuginfo - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
libxml2-2-32bit-debuginfo - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1, 2.12.10-150700.4.11.1
libxml2-devel-32bit - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1
libxml2-devel-64bit - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1
libxml2-2-64bit-debuginfo - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1
libxml2-2-64bit - addressed in versions 2.9.14-150400.5.55.1, 2.10.3-150500.5.38.1
libxml2 - update to 2.11.5-17
libxml2-devel - update to 2.11.5-17
libxml2-static - update to 2.11.5-17
python3-libxml2 - update to 2.11.5-17
libxml2-doc - update to 2.11.5-17
libxml2-help - update to 2.11.9-13
libxml2 - update to 2.11.9-13
libxml2-debuginfo - update to 2.11.9-13
libxml2-debugsource - update to 2.11.9-13
libxml2-devel - update to 2.11.9-13
python3-libxml2 - update to 2.11.9-13

• https://access.redhat.com/security/cve/CVE-2026-1757
• https://bugzilla.redhat.com/show_bug.cgi?id=2435940

• Memory leak in libxml2 xmllint
• SUSE update for libxml2
• SUSE update for libxml2
• SUSE update for libxml2
• SUSE update for libxml2
• SUSE update for libxml2
• Anolis OS update for libxml2
• openEuler update for libxml2