CVE-2026-57074: XML::Bare versions through 0.53 for Perl have an unbounded character lookahead

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-16 · updated 2026-10-24
Weakness: CWE-125

Description

XML::Bare versions through 0.53 for Perl have an unbounded character lookahead. The parserc_parse function attempts to check for multicharacter strings such as "<![CDATA" or element terminators such as ">" without checking that the offsets are within the buffer. Truncated strings such as "<a/" can trigger an out-of-bounds read.

Affected products

CODECHILD XML::Bare: through 0.53

References

https://github.com/nanoscopic/perl-XML-Bare/pull/1
https://security.metacpan.org/patches/X/XML-Bare/0.53/CVE-2026-57074-r1.patch
http://www.openwall.com/lists/oss-security/2026/07/16/1

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