CVE-2026-45191

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Source
https://cve.org/CVERecord?id=CVE-2026-45191
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45191.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45191
Downstream
Related
Published
2026-05-10T20:15:53Z
Modified
2026-10-28T02:30:33Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
Summary
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
Details

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.

Database specific 
{
    "cna_assigner": "CPANSec",
    "cwe_ids": [
        "CWE-1289"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45191.json"
}
References

Affected packages

Git / github.com/stigtsp/net-cidr-lite

Affected ranges

Type
GIT
Repo
https://github.com/stigtsp/net-cidr-lite
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f5a20ecc59bdf23c4104a55e7f01a8c7729b7fc5
Fixed
24e2c439ec405e5256024b9acefd4f7008c5ed0c
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.24"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "24e2c439ec405e5256024b9acefd4f7008c5ed0c"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

0.*
0.21
0.22
0.23

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45191.json"