Astra Linux – Vulnerabilities in Firefox, Thunderbird, Expat, LibXMLTok

The addBinding method in xmlparse.c within Expat also known as libexpat has an integer overflow issue before version 2.4.3...

Astra Linux – Vulnerabilities in Firefox, Thunderbird, and Expat

The buildmodel function in xmlparse.c within ExPat also known as libexpat has an integer overflow issue before version 2.4.3...

Astra Linux – Vulnerability in Firefox, expat, libxmltok, Thunderbird

The libexpat library before version 2.4.9 has a use-after-free issue in the doContent function of the xmlparse.c file...

Astra Linux – Vulnerabilities in Firefox, Thunderbird, Expat, LibXMLTok

The defineAttribute function in xmlparse.c of Expat also known as libexpat has an integer overflow before version 2.4.3...

Astra Linux – Vulnerabilities in Firefox, Thunderbird, Expat, LibXMLTok

The nextScaffoldPart function in xmlparse.c of Expat also known as libexpat, prior to version 2.4.3, has an integer overflow issue...

Astra Linux – Vulnerabilities in Firefox, Thunderbird, Expat, LibXMLTok

The issue with integer overflow occurs in storeAtts in the xmlparse.c file, within the Expat library also known as libexpat, before version 2.4.3...

CVE-2026-66046 Expat Denial of Service via storeAtts() Quadratic Complexity

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 determine CDATA status. ...

JLSEC-2026-1226

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...

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: 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...

SUSE CVE-2026-56132

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...

ALPINE-CVE-2026-56132

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

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

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

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...

PT-2026-50832

Name of the Vulnerable Software and Affected Versions libexpat versions prior to 2.8.2 Description A heap-based buffer overflow occurs in the doProlog function within xmlparse.c. This issue arises because the reallocation of the scaffold backing array is mishandled when data-structure sharing is...

Unity Linux 20.1060e / 20.1070e Security Update: expat (UTSA-2026-017360)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017360 advisory. In doProlog in xmlparse.c in Expat aka libexpat before 2.4.3, an integer overflow exists for mgroupSize. Tenable has extracted the preceding description block direct...

Unity Linux 20.1060e / 20.1070e Security Update: expat (UTSA-2026-017358)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017358 advisory. defineAttribute in xmlparse.c in Expat aka libexpat before 2.4.3 has an integer overflow. Tenable has extracted the preceding description block directly from the Uni...

Unity Linux 20.1060e / 20.1070e Security Update: expat (UTSA-2026-017361)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017361 advisory. nextScaffoldPart in xmlparse.c in Expat aka libexpat before 2.4.3 has an integer overflow. Tenable has extracted the preceding description block directly from the...

Unity Linux 20.1060e / 20.1070e Security Update: expat (UTSA-2026-017354)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017354 advisory. storeAtts in xmlparse.c in Expat aka libexpat before 2.4.3 has an integer overflow. Tenable has extracted the preceding description block directly from the Unity Lin...