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CVE-2024-55549 is a use-after-free vulnerability in xsltGetInheritedNsList in libxslt before version 1.1.43, involving exclusion of result prefixes during XSLT stylesheet processing. When an included stylesheet with xsl:text as its root is deleted, namespace URLs can be freed while the exclPrefixTab table retains references to them. Crafted XSLT can trigger access to these stale references, causing memory corruption, process termination, or potentially arbitrary code execution within the affected application. Applications using vulnerable bundled libxslt versions, including Nokogiri before 1.18.4, are also affected.
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No public exploit code observed for this vulnerability.
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39 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local, low-complexity vulnerability requiring low privileges, with high impact to confidentiality, integrity, and availability according to the supplied CVSS v3 vector.
A vulnerability addressed by the EulerOS SA-2026-3526 security update; the content provides no technical flaw details.
A vulnerability addressed by Huawei EulerOS SA-2026-3439 affecting the libxslt package on EulerOS 2.11.1 UVP. The content provides no technical description specific to this CVE.
A use-after-free vulnerability in libxslt related to excluded result prefixes/namespaces.
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.