CVE-2026-45191 Affecting libnet-cidr-lite-perl package, versions <0.22-3~deb12u2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.3% (23rd percentile)

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  • Snyk IDSNYK-DEBIAN12-LIBNETCIDRLITEPERL-16718403
  • published16 May 2026
  • disclosed10 May 2026

Introduced: 10 May 2026

CVE-2026-45191  (opens in a new tab)

How to fix?

Upgrade Debian:12 libnet-cidr-lite-perl to version 0.22-3~deb12u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libnet-cidr-lite-perl package and not the libnet-cidr-lite-perl package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1