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libexpat.

CVE-2023-52425: Critical XML Parsing Vulnerability Affecting Widespread Systems

by  |  October 09, 2025  |  8 minutes

A critical denial-of-service vulnerability (CVE-2023-52425) in libexpat affects versions up to 2.5.0 through resource exhaustion during XML parsing. This vulnerability, with a CVSS score of 7.5, enables remote attackers to cause system crashes without authentication across Python implementations, Linux distributions, and enterprise systems.