What is CVE-2026-13401?

CVE-2026-13401 is a high-severity vulnerability in Codechild Xml::bare, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-07-16.

How severe is CVE-2026-13401?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Codechild Xml::bare

CVE-2026-13401

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.

EPSS: 0.006 (46.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Codechild Xml::bare — versions 0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (issue-tracking)
9b29abf9-4ab0-4765-b253-1875cd9b441e (patch)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-13401?: CVE-2026-13401 is a high-severity vulnerability in Codechild Xml::bare, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-07-16.
How severe is CVE-2026-13401?: High severity. CVSS v3 base score is 7.5 out of 10.