{"id":"CVE-2026-49940","state":"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.","publishedAt":"2026-06-04T16:07:01.276Z","updatedAt":"2026-06-04T17:36:19.084Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","source":"CISA-ADP"},"assigner":"CPANSec","products":["RRWO Net::CIDR::Set"],"affected":[{"vendor":"RRWO","product":"Net::CIDR::Set","packageName":"Net-CIDR-Set","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.20","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","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"}],"references":["https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes","https://nvd.nist.gov/vuln/detail/CVE-2025-40911"],"weaknesses":["CWE-1289"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49940.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49940","state":"PUBLISHED","datePublished":"2026-06-04T16:07:01.276Z","dateUpdated":"2026-06-04T17:36:19.084Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-06-02T16:06:23.068Z"},"containers":{"cna":{"title":"Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks","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."}],"affected":[{"vendor":"RRWO","product":"Net::CIDR::Set","packageName":"Net-CIDR-Set","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.20","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","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"}],"references":[{"url":"https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes","tags":["release-notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40911","tags":["related"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1289","description":"CWE-1289 Improper Validation of Unsafe Equivalence in Input","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2026-06-04T16:07:01.276Z"},"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"}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-06-04T17:33:44.242109Z","id":"CVE-2026-49940","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-04T17:36:19.084Z"}}]}}}