CVE-2026-45191

MEDIUM6.5

Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass

Published May 10, 2026

Modified 1 weeks ago

Details

Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass.

Mask forms like "/00" and "/01" pass validation and parse to the same prefix as their unpadded value.

See also CVE-2026-45190.

References

FIX

https://github.com/stigtsp/Net-CIDR-Lite/commit/24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch

WEB

https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes

WEB

https://www.cve.org/CVERecord?id=CVE-2026-45190

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-45191

CVSS Analysis