CVE-2026-74860

ADVISORY - nist

Summary

A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.

EPSS Score⁠: 0.00293 (0.217)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-763⁠

Release of Invalid Pointer or Reference

Impacted images

Advisories

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