Vulnerability-Lookup

GHSA-HPV8-77XM-27WX

Vulnerability from github – Published: 2026-06-04 18:30 – Updated: 2026-06-04 18:30

Details

Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks.

Unicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers. This could allow network masks to accept larger networks.

Severity

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-49940"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1289"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-04T17:16:33Z",
    "severity": "MODERATE"
  },
  "details": "Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks.\n\nUnicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers.  This could allow network masks to accept larger networks.",
  "id": "GHSA-hpv8-77xm-27wx",
  "modified": "2026-06-04T18:30:32Z",
  "published": "2026-06-04T18:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40911"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49940"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-49940 (GCVE-0-2026-49940)

Vulnerability from cvelistv5 – Published: 2026-06-04 16:07 – Updated: 2026-06-04 17:36

Title

Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks

Summary

Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks. Unicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers. This could allow network masks to accept larger networks.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-1289 - Improper Validation of Unsafe Equivalence in Input

Assigner

CPANSec

References

2 references

URL	Tags
https://metacpan.org/release/RRWO/Net-CIDR-Set-0.…	release-notes
https://nvd.nist.gov/vuln/detail/CVE-2025-40911	related

Impacted products

1 product

Vendor	Product	Version
RRWO	Net::CIDR::Set	Affected: 0 , ≤ 0.20 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-49940",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-04T17:33:44.242109Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-04T17:36:19.084Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Net-CIDR-Set",
          "product": "Net::CIDR::Set",
          "programRoutines": [
            {
              "name": "Net::CIDR::Set::IPv4::_pack"
            },
            {
              "name": "Net::CIDR::Set::IPv4::_encode"
            },
            {
              "name": "Net::CIDR::Set::IPv6::_pack"
            },
            {
              "name": "Net::CIDR::Set::IPv6::_pack_ipv4"
            }
          ],
          "repo": "https://github.com/robrwo/perl-Net-CIDR-Set",
          "vendor": "RRWO",
          "versions": [
            {
              "lessThanOrEqual": "0.20",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks.\n\nUnicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers.  This could allow network masks to accept larger networks."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1289",
              "description": "CWE-1289 Improper Validation of Unsafe Equivalence in Input",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-04T16:07:01.276Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40911"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to version 0.21."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-13T00:00:00.000Z",
          "value": "Issue reported to CPANSec"
        },
        {
          "lang": "en",
          "time": "2026-06-02T00:00:00.000Z",
          "value": "Net::CIDR::Set version 0.21 released with fix"
        }
      ],
      "title": "Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-49940",
    "datePublished": "2026-06-04T16:07:01.276Z",
    "dateReserved": "2026-06-02T16:06:23.068Z",
    "dateUpdated": "2026-06-04T17:36:19.084Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-HPV8-77XM-27WX

CVE-2026-49940 (GCVE-0-2026-49940)

Tags

Sightings

Nomenclature