Vulnerability DatabaseCVE-2026-45191
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CVE-2026-45191
Published:May 10, 2026
Updated:May 16, 2026
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.
Affected Packages
https://github.com/stigtsp/Net-CIDR-Lite.git (GITHUB):
Affected version(s) >=0.21 <0.24
Fix Suggestion:
Update to version 0.24
Related Resources (3)
https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes
https://github.com/stigtsp/Net-CIDR-Lite/commit/24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch
https://www.cve.org/CVERecord?id=CVE-2026-45190
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Improper Validation of Unsafe Equivalence in Input
CWE-1289
EPSS
Base Score:
0.06