CVE-2026-13397

HTML::Bare versions through 0.04 for Perl will hang in an infinite loop when parsing malformed attributes. The parserc_parse function never advances the attribute-parse state cursor on certain malformed attribute forms, looping forever. Nameless attributes such as "<a ='c'>" or unbalanced quotes "<a b='''''''c'>" can trigger this condition. Note that the latest version available on CPAN is version 0.02. Newer versions are available on the git repository.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nanoscopic/perl-HTML-Bare/pull/1
https://security.metacpan.org/patches/H/HTML-Bare/0.02/CVE-2026-13397-r1.patch
http://www.openwall.com/lists/oss-security/2026/07/16/4

Configurations

No configuration.

History

17 Jul 2026, 14:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

16 Jul 2026, 20:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/07/16/4 -

16 Jul 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-16 17:16

Updated : 2026-07-17 14:17

NVD link : CVE-2026-13397

Mitre link : CVE-2026-13397

CVE.ORG link : CVE-2026-13397

JSON object : View

Products Affected

No product.

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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