NULL Pointer Dereference Affecting libxml2 package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-CONAN-LIBXML2-20079001
- published24 Sept 2026
- disclosed19 Aug 2026
- creditUnknown
Introduced: 19 Aug 2026
CVE-2026-76781 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference in the XML catalog parsing process when a nextCatalog element lacks the required catalog attribute. An attacker can cause the application to crash by supplying a specially crafted XML catalog file to an application that processes untrusted XML input.
Workaround
This vulnerability can be mitigated by avoiding the processing of untrusted XML catalog files, exercising caution when handling XML documents from untrusted sources, and restricting applications from loading external XML catalogs or ensuring only trusted catalog files are used.