PT-2026-39540 · Cpan · Xml-Libxml

Toddr · Published 2026-05-10 · Updated 2026-06-15 · CVE-2026-8177

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions XML::LibXML versions prior to 2.0211

Description XML::LibXML for Perl reads out-of-bounds heap memory when parsing XML node names that contain 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 passing attacker-controlled strings to DOM node-name methods can trigger this issue on the default API, likely resulting in a crash and denial of service.

Recommendations Update to version 2.0211 or later.

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-8177

ECHO-D531-9D26-AC4F

OPENSUSE-SU-2026:10854-1

OPENSUSE-SU-2026:20908-1

SUSE-SU-2026:22081-1

SUSE-SU-2026:2324-1

SUSE-SU-2026:2402-1

Affected Products

Xml-Libxml

References · 28

• https://github.com/cpan-authors/XML-LibXML/commit/15652bd905a6c9dda59a81b14d4766adbbae2ea8.patch · Patch
• https://cve.org/CVERecord?id=CVE-2026-8177 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10854-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-8177 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:2402-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:22081-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20908-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-8177 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:2324-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-8177 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8177 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-8177 · Vendor Advisory
• https://github.com/cpan-authors/XML-LibXML/issues/146 · Note
• https://github.com/cpan-authors/XML-LibXML/pull/149 · Note
• https://t.me/cveNotify/162977 · Telegram Post