CVE-2026-45191

MediumCVSS 6.5/10Last modified Jul 24, 2026

Description

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-1289

Affected software

No affected versions have been published.

Timeline

Published
May 10, 2026
Last modified
Jul 24, 2026
NVD status
Deferred

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CVE-2026-45191: Medium severity, CVSS 6.5 | Vulnix