CVE-2026-45191

—

CVSS 3.1

6.5 medium

EPSS

<1%p22

Published

May 10, 2026 (May 10, 2026)

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.

Weakness: CWE-1289
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

NVD CVE.org GitHub PoCs EPSS (0.3%)

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