CVE-2026-57073 HTML::Bare versions through 0.04 for Perl have an unbounded character lookahead
An attacker can cause an out-of-bounds read in the HTML::Bare Perl library by providing truncated input, potentially leading to crashes or data exposure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-57073?
CVE-2026-57073 is a critical memory corruption vulnerability in CODECHILD HTML::Bare, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-125
Which versions are affected by CVE-2026-57073?
How do I fix CVE-2026-57073?
No fix has been published for CVE-2026-57073 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-57073 being exploited?
There is no known exploitation of CVE-2026-57073 in the wild and no public exploit code.
Sources
Also known as GHSA-682p-jxjc-9j4v.