expat: Expat: Denial of Service via quadratic complexity in attribute processing

A flaw was found in the Expat XML parsing library. A remote, unauthenticated attacker can supply a specially crafted XML document to trigger quadratic algorithmic complexity in the storeAtts function, causing excessive CPU consumption and a denial of service...

expat: Expat: Denial of Service via quadratic complexity in attribute processing

A flaw was found in the Expat XML parsing library. A remote, unauthenticated attacker can supply a specially crafted XML document to trigger quadratic algorithmic complexity in the storeAtts function, causing excessive CPU consumption and a denial of service...

expat: Expat: Denial of Service via quadratic complexity in attribute processing

A flaw was found in the Expat XML parsing library. A remote, unauthenticated attacker can supply a specially crafted XML document to trigger quadratic algorithmic complexity in the storeAtts function, causing excessive CPU consumption and a denial of service...

CVE-2026-66046

A flaw was found in the Expat XML parsing library. A remote, unauthenticated attacker can supply a specially crafted XML document to trigger quadratic algorithmic complexity in the storeAtts function, causing excessive CPU consumption and a denial of service Mitigation To mitigate, avoid parsing...

OESA-2026-3837 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: Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts...

Astra Linux – Vulnerabilities in Firefox, Thunderbird, and Expat

In Expat also known as libexpat, before version 2.4.3, a left shift of 29 or more in the storeAtts function in xmlparse.c could lead to improper realloc behavior. This could result in allocating too few bytes, or only freeing memory after it was no longer needed...

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...

expat: Expat: Denial of Service via quadratic complexity in attribute processing

A flaw was found in the Expat XML parsing library. A remote, unauthenticated attacker can supply a specially crafted XML document to trigger quadratic algorithmic complexity in the storeAtts function, causing excessive CPU consumption and a denial of service...

OESA-2026-3670 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: Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts...

OESA-2026-3671 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: Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts...

FreeBSD : expat2 -- Inefficient Algorithmic Complexity (88917664-a65c-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 88917664-a65c-11f1-a49c-00a0980083d7 advisory. https://github.com/libexpat/libexpat/pull/1321 reports: Expat through 2.8.3 contains a denial of servic...

TencentOS Server 4: expat (TSSA-2026:0879)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0879 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

TencentOS Server 4: xmlrpc-c (TSSA-2026:0877)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0877 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

SUSE CVE-2026-76641

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XMLExternalEntityParserCreate. A struct size mismatch between ELEMENTTYPE members causes storeAtts to read the attIndex...

SUSE CVE-2026-66046

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. ...

CVE-2026-76641

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XMLExternalEntityParserCreate. A struct size mismatch between ELEMENTTYPE members causes storeAtts to read the attIndex...

CVE-2026-76641: Out-of-bounds Read

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XMLExternalEntityParserCreate. A struct size mismatch between ELEMENTTYPE members causes storeAtts to read the attIndex...

The vulnerability of the storeAtts() function in the Expat library allows a hacker to trigger a service failure.

The vulnerability of the storeAtts function in the Expat library is related to its algorithmic complexity. Exploiting this vulnerability could allow a remote attacker to cause a service failure...

Linux Distros Unpatched Vulnerability : CVE-2026-66046

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts function in xmlparse.c, where...

DEBIAN-CVE-2026-66046

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. ...