CVE-2026-45191
MEDIUMNet::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
Title source: cnaDescription
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 (3)
Core 3
Core References
Patch patch
https://github.com/stigtsp/Net-CIDR-Lite/commit/24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch
Release Notes release-notes
https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes
Related related
https://www.cve.org/CVERecord?id=CVE-2026-45190
Scores
CVSS v3
6.5
EPSS
0.0030
EPSS Percentile
21.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1289
Status
published
Products (1)
STIGTSP/Net::CIDR::Lite
< 0.24
Published
May 10, 2026
Tracked Since
May 11, 2026