CVE-2026-56411

A flaw was found in libexpat, a software library used for parsing XML Extensible Markup Language documents. An attacker could exploit an integer overflow vulnerability in the xmlwf utility by crafting malicious NOTATION declarations. This could lead to the disclosure of sensitive information or...

CVE-2026-56411

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations...

ALPINE-CVE-2026-56411

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations...

Integer Overflow or Wraparound

Overview Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the endDoctypeDecl process when handling NOTATION declarations. An attacker can cause memory corruption or potentially execute arbitrary code by providing specially crafted XML input. Remediation A fix...

EUVD-2026-38188

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations...

CVE-2026-56411

CVE-2026-56411 affects libexpat’s xmlwf binary, with an integer overflow in endDoctypeDecl triggered by NOTATION declarations prior to version 2.8.2. The CVSS metrics indicate a Local attack vector, high confidentiality and integrity impact, and low availability impact, with no user interaction r...

CVE-2026-56411

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations...

CVE-2026-56411

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations...

CVE-2026-56411

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations...

PT-2026-51247

Name of the Vulnerable Software and Affected Versions libexpat versions prior to 2.8.2 Description The xmlwf component contains an integer overflow in the endDoctypeDecl function. This issue is triggered via NOTATION declarations, which are used in XML to define the format of non-XML data...

Linux Distros Unpatched Vulnerability : CVE-2026-56411

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations. CVE-2026-56411 Note that Nessus relies on the presence of th...