CVE-2026-8177
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk48th percentile - higher than 48% of all known CVEs
Summary
XML::LibXML for Perl up to version 2.0210 reads out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 sequences. A node name ending in the middle of a multi-byte UTF-8 sequence causes reading past the end of the input string into adjacent heap memory.
Risk Assessment
A Perl process handling attacker-controlled data may crash, leading to denial of service.
Recommendation
Upgrade XML::LibXML to a version later than 2.0210 or apply security patches.
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Original NVD description (English source)
XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences. A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory. Any Perl process that passes attacker controlled strings to XML::LibXML's DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.