CVE-2026-57073

HTML::Bare versions through 0.04 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. Note that the latest version available on CPAN is version 0.02. Newer versions are available on the git repository.

CVSS 3.1

9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-07-16

Modified

2026-10-24

Record from

the NVD, synced 2026-10-25

References

• https://github.com/nanoscopic/perl-HTML-Bare/pull/2
• https://security.metacpan.org/patches/H/HTML-Bare/0.02/CVE-2026-57073-r1.patch
• https://security.metacpan.org/patches/H/HTML-Bare/0.04/CVE-2026-57073-r2.patch
• http://www.openwall.com/lists/oss-security/2026/07/16/3

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