libxml2: libxml2: Arbitrary code execution via stack-based buffer overflow in xmlSnprintfElements

A flaw was found in libxml2. A local attacker could exploit a stack-based buffer overflow in the xmlSnprintfElements function to achieve arbitrary code execution. This vulnerability in a fundamental system library could lead to significant system compromise if successfully exploited...

libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval due to xpointer length saturation

A flaw in libxml2's xmlXPtrEvalXPtrPart function allows a local attacker to cause a heap-based buffer overflow. An integer overflow while processing an oversized xpointer expression leads to incorrect memory allocation and an out-of-bounds write, potentially resulting in information disclosure,...

libxml2: double-free/UAF in libxml2 Python bindings

A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition DTD with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callbac...

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

A flaw was found in libxml2, a software library for parsing XML documents. An integer overflow within the xmlDictAddQString function can lead to a heap-based buffer overflow. This vulnerability could allow a local attacker to execute arbitrary code on the system, potentially compromising its...

libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks

An integer overflow in the libxml2 xmlIO module occurs when data backlogs exceed maximum integer limits. This flaw passes negative length values to downstream write callbacks, creating an unsafe state that can lead to data corruption or compromise application confidentiality and integrity...

Important: Red Hat Security Advisory: libxml2 security update

An update for libxml2 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.

A flaw in libxml2's XInclude processing xmlXIncludeProcess and xmlXIncludeProcessTree fails to propagate parser flags like XMLPARSENONET. This allows custom resource loaders to fetch external network resources, potentially enabling Server-Side Request Forgery SSRF, XML External Entity XXE...

libxml2: Fix of 2 CVEs

CVE-2026-86143: reject buffer lengths at or above INTMAX before calling the output write callback to prevent an integer overflow - CVE-2026-86144: propagate parseFlags in xmlXIncludeProcess and xmlXIncludeProcessTree so parser flags such as XMLPARSENONET are honoured...

RHEL 10 : libxml2 (RHSA-2026:71586)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:71586 advisory. The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2:...

RHEL 8 : libxml2 (RHSA-2026:71641)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:71641 advisory. The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2:...

ALSA-2026:71586 Important: libxml2 security update

The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow CVE-2026-86138 libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks...

ALSA-2026:71585 Important: libxml2 security update

The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow CVE-2026-86138 libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks...

RHEL 9 : libxml2 (RHSA-2026:71585)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:71585 advisory. The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2:...

libxml2 security update

2.9.13-14.5 - Fix CVE-2026-86144 RHEL-256304 - Fix CVE-2026-86140 RHEL-256027 - Fix CVE-2026-74860 RHEL-256120 - Fix CVE-2026-86142 RHEL-256365 - Fix CVE-2026-86143 RHEL-256901 - Fix CVE-2026-86138 RHEL-256953...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: libxml2 (UTSA-2026-123925)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-123925 advisory. Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously...

ALSA-2026:71641 Important: libxml2 security update

The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow CVE-2026-86138 libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks...

Important: libxml2 security update

The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow CVE-2026-86138 libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks...

Important: libxml2 security update

The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fixes: libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow CVE-2026-86138 libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks...

Use-after-free when XML includes have duplicated entities

Librsvg uses libxml2, a C library, to parse XML. When librsvg parses an SVG document which has a nested Xinclude, an XML entity declaration with a duplicate name as an existing one can cause a use-after-free error. While libxml2 is expanding an internal entity, a recursive XInclude can parse...

RUSTSEC-2026-0305 Use-after-free when XML includes have duplicated entities

Librsvg uses libxml2, a C library, to parse XML. When librsvg parses an SVG document which has a nested Xinclude, an XML entity declaration with a duplicate name as an existing one can cause a use-after-free error. While libxml2 is expanding an internal entity, a recursive XInclude can parse...