CVE-2024-50602 An issue was discovered in libexpat before 2.6.4. There is a crash within the XML_ResumeParser function because XML_StopParser can stop/suspend an unstarted parser.

Api.Msrc.Microsoft • February 18, 2026

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Multiple Vulnerabilities Discovered in XML Parsing Libraries Two vulnerabilities have been reported in widely used XML parsing libraries. CVE-2024-50602 affects libexpat versions prior to 2.6.4, causing a crash in the XML_ResumeParser function. CVE-2024-34459 impacts xmllint from libxml2 versions before 2.11.8 and 2.12.x before 2.12.7, leading to buffer overflows when formatting error messages. 2 sources 43

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