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CVE-2026-74860 is a double-free vulnerability in libxml2 when Python bindings are enabled. Processing a crafted XML document containing a DTD with enumerated attribute values reaches the SAX attributeDecl callback handler, which frees a string twice. The resulting invalid memory operation causes a reproducible crash in Python applications using the libxml2 SAX bindings.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the Oracle Linux ELSA-2026-71641 update for libxml2-related packages on Oracle Linux 8.
A double-free and use-after-free vulnerability in the libxml2 Python bindings.
A referenced vulnerability addressed by the Oracle Linux libxml2 package update; no technical flaw details are provided.
A vulnerability addressed by the referenced Oracle Linux security update affecting listed libxml2-related packages.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.