CVE-2026-13401

Summary

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

Weaknesses

• CWE-835: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Workarounds

Apply the patch.

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/07/16/2

References

• https://github.com/nanoscopic/perl-XML-Bare/pull/2
• https://security.metacpan.org/patches/X/XML-Bare/0.53/CVE-2026-13401-r1.patch

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