MGASA-2026-0378 Updated mingw-expat & expat packages fix security vulnerabilities

Expat Denial of Service via storeAtts Quadratic Complexity. CVE-2026-66046 Expat Out-of-Bounds Read via dtdCopy. CVE-2026-76641 In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding...

Updated mingw-expat & expat packages fix security vulnerabilities

Expat Denial of Service via storeAtts Quadratic Complexity. CVE-2026-66046 Expat Out-of-Bounds Read via dtdCopy. CVE-2026-76641 In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding...

FreeBSD : expat2 -- Out-of-bounds Read (11ab3b16-a65d-11f1-a49c-00a0980083d7)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 11ab3b16-a65d-11f1-a49c-00a0980083d7 advisory. https://github.com/libexpat/libexpat/pull/1331 reports: Expat through 2.8.3 contains an out-of-bounds...

Important: firefox

Issue Overview: Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an ON^2 linear scan of elementType-defaultAtts to determin...

Amazon Linux 2023 : firefox (ALAS2023-2026-2105)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2105 advisory. Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts function in xmlparse.c, where processing N specified attributes with...

libexpat: libexpat: Denial of Service via hash flooding attack with crafted XML

A flaw was found in libexpat. This vulnerability arises from the software misinterpreting a return code, leading to insufficient randomness entropy for hash functions. A remote attacker could exploit this by sending specially crafted XML content, triggering hash flooding attacks. This can result ...

libexpat: libexpat: Memory corruption vulnerability allows arbitrary code execution or denial of service

A flaw was found in libexpat. The library's handling of custom encoding callbacks lacks proper tracking of handler call depth, which can lead to a use-after-free vulnerability. This memory corruption flaw could allow a local attacker to cause a denial of service or potentially execute arbitrary...

CVE-2026-76957

A flaw was found in libexpat. The library's handling of custom encoding callbacks lacks proper tracking of handler call depth, which can lead to a use-after-free vulnerability. This memory corruption flaw could allow a local attacker to cause a denial of service or potentially execute arbitrary...

CVE-2026-76956

A flaw was found in libexpat. This vulnerability arises from the software misinterpreting a return code, leading to insufficient randomness entropy for hash functions. A remote attacker could exploit this by sending specially crafted XML content, triggering hash flooding attacks. This can result ...

PoC-Exploit

pocs Proof-of-concept exploits for vulnerabilities discovered...

SUSE CVE-2026-76956

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content...

SUSE CVE-2026-76957

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412...

OESA-2026-3403 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 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as...

AZL-96848 CVE-2026-76956 affecting package expat for versions less than 2.8.3-2

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content...

CVE-2026-76956

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content...

ALPINE-CVE-2026-76956

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content...

CVE-2026-76957

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412...

ALPINE-CVE-2026-76957

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412...

AZL-96851 CVE-2026-76957 affecting package expat for versions less than 2.8.3-2

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412...

UBUNTU-CVE-2026-76956

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content...