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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.

PUBLISHED Reserved 2026-05-10 | Published 2026-05-10 | Updated 2026-05-10 | Assigner CPANSec

Problem types

CWE-1289 Improper Validation of Unsafe Equivalence in Input

Product status

Default status
unaffected

Any version before 0.24
affected

Timeline

2026-05-10:Vulnerability found
2026-05-10:Net-CIDR-Lite version 0.24 released

References

github.com/...24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch patch

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

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

cve.org (CVE-2026-45191)

nvd.nist.gov (CVE-2026-45191)

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