CVE-2026-56131

A use-after-free vulnerability in libexpat occurs because handler call depth isn't properly tracked when XMLResumeParser is invoked during policy violations. This flaw can lead to information disclosure, data corruption, or denial of service. Mitigation To mitigate this vulnerability, avoid...

CVE-2026-56404

A flaw was found in libexpat. This vulnerability, an integer overflow in the addBinding function, could allow a local attacker to execute arbitrary code. By exploiting this, an attacker could gain control over the affected system, compromising its confidentiality and integrity. Mitigation Do not...

OESA-2026-3179 python3 security update

Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C...

OESA-2026-3178 python3 security update

Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C...

EulerOS Virtualization 2.12.0 : expat (EulerOS-SA-2026-2771)

According to the versions of the expat package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : libexpat before 2.7.5 allows an infinite loop while parsing DTD content.CVE-2026-32777 libexpat before 2.7.5 allows a NULL pointer...

Amazon Linux 2023 : python3.12, python3.12-devel, python3.12-idle (ALAS2023-2026-1931)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1931 advisory. The tarfile module would still apply normalization of AREGTYPE \x00 blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPELONGNAME or GNUTYPELONGLINK. This could result ...

libexpat: libexpat: Arbitrary Code Execution via integer overflow in addBinding

A flaw was found in libexpat. This vulnerability, an integer overflow in the addBinding function, could allow a local attacker to execute arbitrary code. By exploiting this, an attacker could gain control over the affected system, compromising its confidentiality and integrity...

libexpat: libexpat: Use-after-free vulnerability due to insufficient handler call depth tracking

A use-after-free vulnerability in libexpat occurs because handler call depth isn't properly tracked when XMLResumeParser is invoked during policy violations. This flaw can lead to information disclosure, data corruption, or denial of service...

libexpat: libexpat: Arbitrary code execution due to integer overflow

An integer overflow exists in libexpat's doProlog function due to improper handling of entity value lengths. A local attacker could exploit this to execute arbitrary code or access sensitive system data...

Security Bulletin: Multiple vulnerabilities in python affects AIX/VIOS.

Summary Integer overflow and use after may cause memory corruption and denial of service. Vulnerability Details CVEID:CVE-2026-56403 DESCRIPTION: libexpat before 2.8.2 has an integer overflow in storeAtts. CWE:CWE-190: Integer Overflow or Wraparound CVSS Source: NVD CVSS Base score: 6.9 CVSS...

Security Bulletin: Multiple vulnerabilities in Python affects AIX/VIOS.

Summary Integer overflow and use after may cause memory corruption and denial of service. Vulnerability Details CVEID:CVE-2026-56403 DESCRIPTION: libexpat before 2.8.2 has an integer overflow in storeAtts. CWE:CWE-190: Integer Overflow or Wraparound CVSS Source: NVD CVSS Base score: 6.9 CVSS...

Multiple vulnerabilities in Python affect AIX

IBM SECURITY ADVISORY First Issued: Tue Jul 14 06:03:19 CDT 2026 The most recent version of this document is available here: https://aix.software.ibm.com/aix/efixes/security/pythonadvisory20.asc Security Bulletin: Multiple vulnerabilities in Python affect AIX...

EulerOS 2.0 SP12 : expat (EulerOS-SA-2026-2586)

According to the versions of the expat packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : libexpat before 2.7.5 allows an infinite loop while parsing DTD content.CVE-2026-32777 libexpat before 2.7.5 allows a NULL pointer dereference with...

OESA-2026-2975 expat security update

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial. Security Fixes: libexpat before 2.8.2 has an integer overflow in storeAtts.CVE-2026-56403 libexpat before 2.8.2 has an integer overflow in...

OESA-2026-2974 expat security update

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial. Security Fixes: libexpat before 2.8.2 has an integer overflow in storeAtts.CVE-2026-56403 libexpat before 2.8.2 has an integer overflow in...

Important: expat

Issue Overview: In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers. CVE-2026-56132 Affected Packages: expat Note: This advisory is applicable to...

expat: libexpat: Arbitrary Code Execution via Heap-based Buffer Overflow

A flaw was found in libexpat, a library used for parsing XML data. An attacker could exploit a heap-based buffer overflow, a type of memory error, by providing specially crafted XML input. This vulnerability occurs when the library mishandles memory reallocation while processing XML, particularly...

expat: libexpat: Use-after-free vulnerability due to improper handler call depth tracking

A flaw was found in libexpat. This vulnerability occurs because the library, in versions before 2.8.2, does not properly track handler call depth when certain XML parsing functions are invoked from within handlers during a policy violation. This oversight can lead to a use-after-free condition,...

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).

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libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

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