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: 2026-05-10
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

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

Tracking

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Advisories

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History

Mon, 11 May 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 10 May 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Stigtsp
Stigtsp net::cidr::lite
Vendors & Products Stigtsp
Stigtsp net::cidr::lite

Sun, 10 May 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title 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
Weaknesses CWE-1289
References

Subscriptions

Stigtsp Net::cidr::lite
cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-05-11T16:37:48.124Z

Reserved: 2026-05-10T16:36:05.708Z

Link: CVE-2026-45191

cve-icon Vulnrichment

Updated: 2026-05-11T16:37:33.165Z

cve-icon NVD

Status : Deferred

Published: 2026-05-10T21:16:29.380

Modified: 2026-05-12T16:48:58.260

Link: CVE-2026-45191

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-11T19:45:08Z

Weaknesses