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CVE Vulnerability Details :
CVE-2026-45191
PUBLISHED
More InfoOfficial Page
Assigner-CPANSec
Assigner Org ID-9b29abf9-4ab0-4765-b253-1875cd9b441e
View Known Exploited Vulnerability (KEV) details
Published At-10 May, 2026 | 20:15
Updated At-10 May, 2026 | 20:15
Rejected At-
▼CVE Numbering Authority (CNA)
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

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 Products
Vendor
STIGTSP
Product
Net::CIDR::Lite
Collection URL
https://cpan.org/modules
Package Name
Net-CIDR-Lite
Repo
https://github.com/stigtsp/Net-CIDR-Lite
Program Files
  • Lite.pm
Program Routines
  • Net::CIDR::Lite::add
Default Status
unaffected
Versions
Affected
  • From 0 before 0.24 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-1289CWE-1289 Improper Validation of Unsafe Equivalence in Input
Type: CWE
CWE ID: CWE-1289
Description: CWE-1289 Improper Validation of Unsafe Equivalence in Input
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Upgrade to version 0.24 or newer, or apply the patch provided.

Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Vulnerability found2026-05-10 00:00:00
Net-CIDR-Lite version 0.24 released2026-05-10 00:00:00
Event: Vulnerability found
Date: 2026-05-10 00:00:00
Event: Net-CIDR-Lite version 0.24 released
Date: 2026-05-10 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/stigtsp/Net-CIDR-Lite/commit/24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch
patch
https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes
release-notes
https://www.cve.org/CVERecord?id=CVE-2026-45190
related
Hyperlink: https://github.com/stigtsp/Net-CIDR-Lite/commit/24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch
Resource:
patch
Hyperlink: https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes
Resource:
release-notes
Hyperlink: https://www.cve.org/CVERecord?id=CVE-2026-45190
Resource:
related
Details not found