CVE-2026-13401: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') in CODECHILD XML::Bare
XML::Bare versions through 0.53 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.
AI Analysis
Technical Summary
CVE-2026-13401 describes an infinite loop vulnerability (CWE-835) in the XML::Bare Perl module versions up to 0.53. The vulnerability occurs because the parserc_parse function does not advance the attribute-parse state cursor when encountering malformed attributes like nameless attributes (e.g., <a ='c'>) or unbalanced quotes (e.g., <a b='''''''c'>). This causes the parser to loop indefinitely, resulting in a hang condition.
Potential Impact
The vulnerability causes the XML::Bare parser to hang indefinitely when processing certain malformed XML inputs. This can lead to denial of service conditions in applications that rely on this module for XML parsing, as the parser will not recover from the infinite loop without intervention.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid parsing untrusted or malformed XML inputs that could trigger the infinite loop. Consider using alternative XML parsing libraries that do not exhibit this behavior.
CVE-2026-13401: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') in CODECHILD XML::Bare
Description
XML::Bare versions through 0.53 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.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13401 describes an infinite loop vulnerability (CWE-835) in the XML::Bare Perl module versions up to 0.53. The vulnerability occurs because the parserc_parse function does not advance the attribute-parse state cursor when encountering malformed attributes like nameless attributes (e.g., <a ='c'>) or unbalanced quotes (e.g., <a b='''''''c'>). This causes the parser to loop indefinitely, resulting in a hang condition.
Potential Impact
The vulnerability causes the XML::Bare parser to hang indefinitely when processing certain malformed XML inputs. This can lead to denial of service conditions in applications that rely on this module for XML parsing, as the parser will not recover from the infinite loop without intervention.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid parsing untrusted or malformed XML inputs that could trigger the infinite loop. Consider using alternative XML parsing libraries that do not exhibit this behavior.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-06-26T08:38:33.750Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5907ce68715ace4356ca60
Added to database: 07/16/2026, 16:33:18 UTC
Last enriched: 07/16/2026, 16:49:13 UTC
Last updated: 07/16/2026, 23:03:11 UTC
Views: 4
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