Vulnerability-Lookup

CVE-2026-45190 (GCVE-0-2026-45190)

Vulnerability from cvelistv5 – Published: 2026-05-10 20:15 – Updated: 2026-05-12 14:31

Title

Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass

Summary

Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass. Inputs containing a trailing newline or non-ASCII digit characters pass the validators but are then re-encoded by the parser to a different address than the input string spelled. find() and bin_find() can match or miss addresses as a result. Example: my $cidr = Net::CIDR::Lite->new(); $cidr->add("::1\n/128"); $cidr->find("::1a"); # incorrectly returns true See also CVE-2026-45191.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-12 14:30 UTC

CWE

CWE-1289 - Improper Validation of Unsafe Equivalence in Input

Assigner

CPANSec redhat root

References

3 references

URL	Tags
https://github.com/stigtsp/Net-CIDR-Lite/commit/c…	patch
https://metacpan.org/release/STIGTSP/Net-CIDR-Lit…	release-notes
https://www.cve.org/CVERecord?id=CVE-2026-45191	related

Impacted products

1 product

Vendor	Product	Version	CPE status
STIGTSP	Net::CIDR::Lite	Affected: 0 , < 0.24 (custom)	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-45190

Vulnerability from fkie_nvd - Published: 2026-05-10 21:16 - Updated: 2026-07-24 13:10

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://www.cve.org/CVERecord?id=CVE-2026-45191

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Net-CIDR-Lite",
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    },
    {
      "lang": "es",
      "value": "Las versiones de Net::CIDR::Lite anteriores a la 0.24 para Perl no validan correctamente las entradas de direcci\u00f3n IP y m\u00e1scara CIDR, lo que puede permitir la omisi\u00f3n de ACL de IP.\n\nLas entradas que contienen un salto de l\u00ednea final o caracteres de d\u00edgitos no ASCII pasan los validadores, pero luego son recodificadas por el analizador a una direcci\u00f3n diferente de la que especifica la cadena de entrada. find() y bin_find() pueden coincidir o no con direcciones como resultado.\n\nEjemplo:\n\n  my $cidr = Net::CIDR::Lite -\u003e new();\n  $cidr -\u003e add(\u0027::1\\n/128\u0027);\n  $cidr -\u003e find(\u0027::1a\u0027);  # devuelve true incorrectamente\n\nV\u00e9ase tambi\u00e9n CVE-2026-45191."
    }
  ],
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  "lastModified": "2026-07-24T13:10:00.223",
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          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45190",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-12T14:30:52.674727Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-10T21:16:29.273",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45191"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1289"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-5VF8-328M-MXJ5

Vulnerability from github – Published: 2026-05-10 21:30 – Updated: 2026-05-12 15:31

Details

Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass.

Inputs containing a trailing newline or non-ASCII digit characters pass the validators but are then re-encoded by the parser to a different address than the input string spelled. find() and bin_find() can match or miss addresses as a result.

Example:

my $cidr = Net::CIDR::Lite->new(); $cidr->add("::1\n/128"); $cidr->find("::1a"); # incorrectly returns true

OPENSUSE-SU-2026:10780-1

Vulnerability from csaf_opensuse - Published: 2026-05-14 00:00 - Updated: 2026-09-17 17:05

Summary

perl-Net-CIDR-Lite-0.240.0-1.1 on GA media

Severity

Moderate

Scope

4 vulnerabilities in this advisory, including CVE-2026-45190.

CVE-2026-45190

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:2113-1

Vulnerability from csaf_suse - Published: 2026-05-29 15:24 - Updated: 2026-05-29 15:24

Summary

Security update for perl-Net-CIDR-Lite

Severity

Important

Scope

4 vulnerabilities in this advisory, including CVE-2026-45190.

CVE-2026-45190

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Recommended: 11 products

Open the full advisory

UBUNTU-CVE-2026-45190 (CVE-2026-45190)

Vulnerability from osv_ubuntu – Published: 2026-06-15 00:00 – Updated: 2026-06-24 09:02 – Source website

Details

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-45190	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-45190	REPORT
	https://github.com/stigtsp/Net-CIDR-Lite/commit/c…	REPORT
	https://www.openwall.com/lists/oss-security/2026/…	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT
	https://ubuntu.com/security/notices/USN-8453-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.21-1ubuntu0.16.04.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libnet-cidr-lite-perl",
        "purl": "pkg:deb/ubuntu/libnet-cidr-lite-perl@0.21-1ubuntu0.16.04.1~esm2?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.21-1ubuntu0.16.04.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.21-1",
        "0.21-1ubuntu0.16.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.21-1ubuntu0.18.04.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libnet-cidr-lite-perl",
        "purl": "pkg:deb/ubuntu/libnet-cidr-lite-perl@0.21-1ubuntu0.18.04.1~esm2?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.21-1ubuntu0.18.04.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.21-1",
        "0.21-1ubuntu0.18.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.21-2ubuntu0.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libnet-cidr-lite-perl",
        "purl": "pkg:deb/ubuntu/libnet-cidr-lite-perl@0.21-2ubuntu0.1+esm2?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.21-2ubuntu0.1+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.21-2",
        "0.21-2ubuntu0.1",
        "0.21-2ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-1ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libnet-cidr-lite-perl",
        "purl": "pkg:deb/ubuntu/libnet-cidr-lite-perl@0.22-1ubuntu0.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.22-1ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.22-1",
        "0.22-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-2ubuntu0.24.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libnet-cidr-lite-perl",
        "purl": "pkg:deb/ubuntu/libnet-cidr-lite-perl@0.22-2ubuntu0.24.04.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.22-2ubuntu0.24.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.22-2",
        "0.22-2ubuntu0.24.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-2ubuntu0.25.10.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libnet-cidr-lite-perl",
        "purl": "pkg:deb/ubuntu/libnet-cidr-lite-perl@0.22-2ubuntu0.25.10.2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.22-2ubuntu0.25.10.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.22-2",
        "0.22-2ubuntu0.25.10.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-2ubuntu0.26.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libnet-cidr-lite-perl",
        "purl": "pkg:deb/ubuntu/libnet-cidr-lite-perl@0.22-2ubuntu0.26.04.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.22-2ubuntu0.26.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.22-2",
        "0.22-2ubuntu0.26.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass. Inputs containing a trailing newline or non-ASCII digit characters pass the validators but are then re-encoded by the parser to a different address than the input string spelled. find() and bin_find() can match or miss addresses as a result. Example:   my $cidr = Net::CIDR::Lite-\u003enew();   $cidr-\u003eadd(\"::1\\n/128\");   $cidr-\u003efind(\"::1a\");  # incorrectly returns true See also CVE-2026-45191.",
  "id": "UBUNTU-CVE-2026-45190",
  "modified": "2026-06-24T09:02:14Z",
  "published": "2026-06-15T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-45190"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45190"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/05/10/6"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/39920372/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8453-1"
    }
  ],
  "related": [
    "USN-8453-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-45190"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-45190 (GCVE-0-2026-45190)

FKIE_CVE-2026-45190

GHSA-5VF8-328M-MXJ5

OPENSUSE-SU-2026:10780-1

SUSE-SU-2026:2113-1

UBUNTU-CVE-2026-45190 (CVE-2026-45190)

Tags

Sightings

Nomenclature

Related by attack behaviour