CVE-2026-74860 — Libxml2: double-free/uaf in libxml2 python bindings
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 …
Published: 2026-09-08 · CVSS: 8.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7