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DEBIAN-CVE-2026-49942

Type: advisorySource: OSV1 source record

Net::CIDR::Set versions through 0.20 for Perl did not validate network masks. The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks. Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-49942

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-49942

libnet-cidr-set-perl

Source reference: /affected/0/package/name

Affected versions
0.13-4

Source reference: /affected/0/versions

0.13-5

Source reference: /affected/0/versions

0.15-1

Source reference: /affected/0/versions

0.19-1

Source reference: /affected/0/versions

0.20-1

Source reference: /affected/0/versions

0.21-1

Source reference: /affected/0/versions

0.22-1

Source reference: /affected/0/versions

0.23-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

libnet-cidr-set-perl

Source reference: /affected/1/package/name

Affected versions
0.15-1

Source reference: /affected/1/versions

Fixed versions
0.15-1+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

libnet-cidr-set-perl

Source reference: /affected/2/package/name

Affected versions
0.15-1

Source reference: /affected/2/versions

0.19-1

Source reference: /affected/2/versions

0.20-1

Source reference: /affected/2/versions

Fixed versions
0.21-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libnet-cidr-set-perl",
      "purl": "pkg:deb/debian/libnet-cidr-set-perl?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.13-4",
      "0.13-5",
      "0.15-1",
      "0.19-1",
      "0.20-1",
      "0.21-1",
      "0.22-1",
      "0.23-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49942.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.15-1+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "libnet-cidr-set-perl",
      "purl": "pkg:deb/debian/libnet-cidr-set-perl?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.15-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49942.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.21-1"
          }
        ]
      }
    ],
    "package": {
      "name": "libnet-cidr-set-perl",
      "purl": "pkg:deb/debian/libnet-cidr-set-perl?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.15-1",
      "0.19-1",
      "0.20-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49942.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57226 · Revision 1
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Publisher date
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