CVE-2026-8177
Severity CVSS v4.0:
Pending analysis
Type:
CWE-125
Out-of-bounds Read
Publication date:
10/05/2026
Last modified:
12/05/2026
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.<br />
<br />
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.<br />
<br />
Any Perl process that passes attacker controlled strings to XML::LibXML&#39;s DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- https://github.com/cpan-authors/XML-LibXML/commit/15652bd905a6c9dda59a81b14d4766adbbae2ea8.patch
- https://github.com/cpan-authors/XML-LibXML/issues/146
- https://github.com/cpan-authors/XML-LibXML/pull/149
- http://www.openwall.com/lists/oss-security/2026/05/10/8
- http://www.openwall.com/lists/oss-security/2026/05/11/2