USN-8520-1: Expat vulnerability

It was discovered that Expat used insufficient entropy when generating hash salt values for its internal hash table. An attacker could use this to craft an XML document that triggers hash flooding, leading to a denial of service...

OESA-2026-2973 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...

OESA-2026-2976 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...

CVE-2026-56407 affecting package expat for versions less than 2.8.2-1

CVE-2026-56407 affecting package expat for versions less than 2.8.2-1. An upgraded version of the package is available that resolves this issue...

CVE-2026-56131 affecting package expat for versions less than 2.8.2-1

CVE-2026-56131 affecting package expat for versions less than 2.8.2-1. An upgraded version of the package is available that resolves this issue...

CVE-2026-56408 affecting package expat for versions less than 2.8.2-1

CVE-2026-56408 affecting package expat for versions less than 2.8.2-1. An upgraded version of the package is available that resolves this issue...

CVE-2026-56132 affecting package expat for versions less than 2.8.2-1

CVE-2026-56132 affecting package expat for versions less than 2.8.2-1. An upgraded version of the package is available that resolves this issue...

CVE-2026-56406 affecting package expat for versions less than 2.8.2-1

CVE-2026-56406 affecting package expat for versions less than 2.8.2-1. An upgraded version of the package is available that resolves this issue...

CVE-2026-56404 affecting package expat for versions less than 2.8.2-1

CVE-2026-56404 affecting package expat for versions less than 2.8.2-1. An upgraded version of the package is available that resolves this issue...

Amazon Linux 2 : expat, --advisory ALAS2-2026-3495 (ALAS-2026-3495)

The version of expat installed on the remote host is prior to 2.1.0-15. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3495 advisory. In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocatio...

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...

Important: expat

Issue Overview: libexpat before 2.8.2 has an integer overflow in storeAtts. CVE-2026-56403 libexpat before 2.8.2 has an integer overflow in XMLParseBuffer because it lacked a check that was present in XMLParse. CVE-2026-56406 libexpat before 2.8.2 has an integer overflow in doProlog that is relat...

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 Issue Correction: Run dnf update expat...

Important: python3.11

Issue Overview: 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 in a crafted tar archive being misinterpreted by the tarfile module compared to other...

[SECURITY] Fedora 43 Update: mingw-expat-2.8.2-1.fc43

This is expat, the C library for parsing XML, written by James Clark. Expat is a stream oriented XML parser. This means that you register handlers with the parser prior to starting the parse. These handlers are called when the parser discovers the associated structures in the document being parse...

[SECURITY] Fedora 44 Update: mingw-expat-2.8.2-1.fc44

This is expat, the C library for parsing XML, written by James Clark. Expat is a stream oriented XML parser. This means that you register handlers with the parser prior to starting the parse. These handlers are called when the parser discovers the associated structures in the document being parse...

OESA-2026-2857 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 lacks handler call depth tracking for calls to XMLResumeParser from within handlers in cases of a poli...

Fedora 44 : mingw-expat (2026-3cb1034453)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3cb1034453 advisory. Update to expat-2.8.2. Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not...

Fedora 43 : mingw-expat (2026-6666907a26)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-6666907a26 advisory. Update to expat-2.8.2. Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not...