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libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow

🗓️ 24 Sep 2026 13:42:41Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Local arbitrary code execution in libxml2 via heap-based buffer overflow in xmlDictAddQString.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-86138
5 Sep 202604:21
–alpinelinux
cbl_mariner
CBLMariner
CVE-2026-86138 affecting package libxml2 for versions less than 2.11.5-11
18 Sep 202614:58
–cbl_mariner
cloudlinux
CloudLinux
libxml2: Fix of 3 CVEs
15 Sep 202614:41
–cloudlinux
cve
CVE
CVE-2026-86138
5 Sep 202604:21
–cve
cvelist
Cvelist
CVE-2026-86138
5 Sep 202604:21
–cvelist
debiancve
Debian CVE
CVE-2026-86138
5 Sep 202604:21
–debiancve
euvd
EUVD
EUVD-2026-71831
5 Sep 202604:21
–euvd
mscve
Microsoft CVE
In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.
6 Sep 202611:36
–mscve
nvd
NVD
CVE-2026-86138
5 Sep 202605:17
–nvd
osv
OSV
AZL-99711 CVE-2026-86138 affecting package libxml2 for versions less than 2.11.5-11
5 Sep 202605:17
–osv
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2aarch64libxml22.12.5-10.el10_2.4libxml2-2.12.5-10.el10_2.4.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lelibxml22.12.5-10.el10_2.4libxml2-2.12.5-10.el10_2.4.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xlibxml22.12.5-10.el10_2.4libxml2-2.12.5-10.el10_2.4.s390x.rpm
Red Hat Enterprise Linux10.2x86_64libxml22.12.5-10.el10_2.4libxml2-2.12.5-10.el10_2.4.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64libxml2-debuginfo2.12.5-10.el10_2.4libxml2-debuginfo-2.12.5-10.el10_2.4.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lelibxml2-debuginfo2.12.5-10.el10_2.4libxml2-debuginfo-2.12.5-10.el10_2.4.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xlibxml2-debuginfo2.12.5-10.el10_2.4libxml2-debuginfo-2.12.5-10.el10_2.4.s390x.rpm
Red Hat Enterprise Linux10.2x86_64libxml2-debuginfo2.12.5-10.el10_2.4libxml2-debuginfo-2.12.5-10.el10_2.4.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64libxml2-debugsource2.12.5-10.el10_2.4libxml2-debugsource-2.12.5-10.el10_2.4.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lelibxml2-debugsource2.12.5-10.el10_2.4libxml2-debugsource-2.12.5-10.el10_2.4.ppc64le.rpm
Rows per page

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24 Sep 2026 20:48Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.16.9 - 7.8
EPSS0.0018
SSVC
4