{"id":"USN-8453-1","summary":"libnet-cidr-lite-perl vulnerabilities","details":"It was discovered that Net::CIDR::Lite incorrectly validated IP address and\nCIDR mask inputs. An attacker could possibly use this issue to bypass IP\naccess control lists. (CVE-2026-45190)\n\nIt was discovered that Net::CIDR::Lite incorrectly handled extraneous zero\ncharacters in CIDR mask values. An attacker could possibly use this issue\nto bypass IP access control lists. (CVE-2026-45191)","modified":"2026-06-18T22:14:13.099306947Z","published":"2026-06-18T16:15:55Z","related":["UBUNTU-CVE-2026-45190","UBUNTU-CVE-2026-45191"],"upstream":["CVE-2026-45190","CVE-2026-45191","UBUNTU-CVE-2026-45190","UBUNTU-CVE-2026-45191"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8453-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45190"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45191"}],"affected":[{"package":{"name":"libnet-cidr-lite-perl","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.21-1ubuntu0.16.04.1~esm2"}]}],"versions":["0.21-1","0.21-1ubuntu0.16.04.1~esm1"],"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"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8453-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2026-45190","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-45191"}]}}},{"package":{"name":"libnet-cidr-lite-perl","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.21-1ubuntu0.18.04.1~esm2"}]}],"versions":["0.21-1","0.21-1ubuntu0.18.04.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnet-cidr-lite-perl","binary_version":"0.21-1ubuntu0.18.04.1~esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8453-1.json","cves_map":{"cves":[{"id":"CVE-2026-45190","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-45191","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:Pro:18.04:LTS"}}},{"package":{"name":"libnet-cidr-lite-perl","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.21-2ubuntu0.1+esm2"}]}],"versions":["0.21-2","0.21-2ubuntu0.1","0.21-2ubuntu0.1+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"0.21-2ubuntu0.1+esm2","binary_name":"libnet-cidr-lite-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8453-1.json","cves_map":{"cves":[{"id":"CVE-2026-45190","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-45191"}],"ecosystem":"Ubuntu:Pro:20.04:LTS"}}},{"package":{"name":"libnet-cidr-lite-perl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.22-1ubuntu0.2"}]}],"versions":["0.22-1","0.22-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.22-1ubuntu0.2","binary_name":"libnet-cidr-lite-perl"}],"availability":"No 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