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High severity7.5NVD Advisory· Published May 10, 2026· Updated May 12, 2026

CVE-2026-8177

CVE-2026-8177

Description

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.

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Affected products

19

Patches

Vulnerability mechanics

References

5

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