{"id":"CVE-2026-49940","aliases":["DEBIAN-CVE-2026-49940","EUVD-2026-34297","GHSA-hpv8-77xm-27wx","UBUNTU-CVE-2026-49940","openSUSE-SU-2026:10951-1"],"status":"published","title":"Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks","description":"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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00196,"percentile":0.09372,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1289"],"published":"2026-06-03T00:00:00Z","modified":"2026-10-28T02:30:52Z","fixes":[{"ecosystem":"Debian:13","package":"libnet-cidr-set-perl","fixed_in":["0.15-1+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libnet-cidr-set-perl","fixed_in":["0.21-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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"]},{"source":"osv","ecosystem":"Debian:13","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15-1+deb13u1"}]}],"versions":["0.15-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.21-1"}]}],"versions":["0.15-1","0.19-1","0.20-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-4","0.13-5"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-5","0.15-1","0.19-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.19-1","0.20-1","0.21-1","0.22-1","0.23-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.19-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"perl-Net-CIDR-Set","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.210.0-1.1"}]}],"bundled":2}],"products":[{"vendor":"rrwo","product":"net::cidr::set"},{"vendor":"rrwo","product":"net\\"}],"references":[{"url":"https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes","tags":["release-notes","Release Notes","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40911","tags":["related","Third Party Advisory","US Government Resource","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49940","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hpv8-77xm-27wx"},{"url":"https://cpan.org/modules","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49940.json","tags":["advisory"]},{"url":"https://github.com/robrwo/perl-Net-CIDR-Set","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-49940","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-49940","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-49940","tags":["report"]},{"url":"https://github.com/robrwo/perl-Net-CIDR-Set/commit/875010b4217afe9a61cee519f0e0250847ecf699","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-49940","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-49941","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-49940","title":"Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks","description":"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.","status":"published","published":"2026-06-04T16:07:01.276Z","modified":"2026-06-04T17:36:19.084Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-1289"],"updated_at":"2026-11-02T13:34:59.78118Z"}],"euvd":[{"id":"EUVD-2026-34297","description":"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.","status":"published","published":"2026-06-04T16:07:01Z","modified":"2026-06-04T17:36:19Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:52.744481Z"}],"ghsa":[{"id":"GHSA-hpv8-77xm-27wx","title":"Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks.\n...","description":"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.","status":"published","published":"2026-06-04T18:30:32Z","modified":"2026-06-04T18:30:39Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-1289"],"updated_at":"2026-11-02T15:08:33.048787Z"}],"nvd":[{"id":"CVE-2026-49940","description":"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.","status":"published","published":"2026-06-04T17:16:33.053Z","modified":"2026-07-22T20:10:00.127Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-1289"],"updated_at":"2026-11-02T14:12:22.022466Z"}],"osv":[{"id":"CVE-2026-49940","title":"Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks","description":"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.","status":"published","published":"2026-06-04T16:07:01.276Z","modified":"2026-10-28T02:30:52.800579876Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-1289"],"updated_at":"2026-11-02T15:45:07.060148Z"},{"id":"DEBIAN-CVE-2026-49940","description":"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.","status":"published","published":"2026-06-04T17:16:33.053Z","modified":"2026-10-01T03:03:16.380567227Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:56.444225Z"},{"id":"UBUNTU-CVE-2026-49940","description":"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.","status":"published","published":"2026-06-04T17:16:00Z","modified":"2026-10-17T12:58:32.724109166Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:33.391918Z"},{"id":"openSUSE-SU-2026:10951-1","title":"perl-Net-CIDR-Set-0.210.0-1.1 on GA media","description":"These are all security issues fixed in the perl-Net-CIDR-Set-0.210.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-03T00:00:00Z","modified":"2026-06-04T09:00:10.208054078Z","updated_at":"2026-11-02T16:58:38.95195Z"}]}}