CVE-2026-8177

HIGH EPSS 37.4%
Published May 10, 20261mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published May 10, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
37.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

References 5

  • openwall.com http://www.openwall.com/lists/oss-security/2026/05/10/8
  • openwall.com http://www.openwall.com/lists/oss-security/2026/05/11/2
  • github.com https://github.com/cpan-authors/XML-LibXML/commit/15652bd905a6c9dda59a81b14d4766adbbae2ea8.patch
  • github.com https://github.com/cpan-authors/XML-LibXML/issues/146
  • github.com https://github.com/cpan-authors/XML-LibXML/pull/149

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.