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CVE-2024-55549 is a use-after-free vulnerability in libxslt before 1.1.43, affecting xsltGetInheritedNsList during XSLT stylesheet processing. When processing exclusion of result prefixes, libxslt can retain namespace-URL references in the exclPrefixTab table after an included stylesheet is deleted. In the affected condition, an included stylesheet whose root is xsl:text is removed, freeing namespace URLs that remain referenced by exclPrefixTab; subsequent processing dereferences the stale references.
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No public exploit code observed for this vulnerability.
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35 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in libxslt related to excluded result prefixes/namespaces.
Third-party/open-source web content processing vulnerability that may cause an unexpected process crash.
Unknown
Unknown.
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.