{"id":"USN-8736-1","summary":"perl vulnerabilities","details":"It was discovered that Perl incorrectly handled certain large inputs during\nregular expression matching. An attacker could possibly use this issue to\ntrigger out-of-bounds heap reads or writes, resulting in a denial of\nservice or arbitrary code execution. (CVE-2026-15534)\n\nIt was discovered that Perl incorrectly handled certain regular expression\ncontaining alternative matching branches. An attacker could  possibly use\nthis issue to cause incorrect regular expression matches, resulting in\nsecurity restrictions being bypassed. (CVE-2026-19487)","modified":"2026-09-09T00:42:26.220114024Z","published":"2026-09-08T14:25:07Z","related":["UBUNTU-CVE-2026-15534","UBUNTU-CVE-2026-19487"],"upstream":["CVE-2026-15534","CVE-2026-19487","UBUNTU-CVE-2026-15534","UBUNTU-CVE-2026-19487"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8736-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-15534"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-19487"}],"affected":[{"package":{"name":"perl","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.2-2ubuntu1.7+esm9"}]}],"versions":["5.14.2-21build1","5.18.1-4","5.18.1-4build1","5.18.1-5","5.18.2-2","5.18.2-2ubuntu1","5.18.2-2ubuntu1.1","5.18.2-2ubuntu1.3","5.18.2-2ubuntu1.4","5.18.2-2ubuntu1.6","5.18.2-2ubuntu1.7","5.18.2-2ubuntu1.7+esm3","5.18.2-2ubuntu1.7+esm4","5.18.2-2ubuntu1.7+esm5","5.18.2-2ubuntu1.7+esm7","5.18.2-2ubuntu1.7+esm8"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_version":"5.18.2-2ubuntu1.7+esm9","binary_name":"libcgi-fast-perl"},{"binary_name":"libperl5.18","binary_version":"5.18.2-2ubuntu1.7+esm9"},{"binary_name":"perl","binary_version":"5.18.2-2ubuntu1.7+esm9"},{"binary_name":"perl-base","binary_version":"5.18.2-2ubuntu1.7+esm9"},{"binary_name":"perl-debug","binary_version":"5.18.2-2ubuntu1.7+esm9"},{"binary_name":"perl-modules","binary_version":"5.18.2-2ubuntu1.7+esm9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8736-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-15534"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-19487"}],"ecosystem":"Ubuntu:Pro:14.04:LTS"}}},{"package":{"name":"perl","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.22.1-9ubuntu0.9+esm4"}]}],"versions":["5.20.2-6","5.22.1-3","5.22.1-4","5.22.1-5","5.22.1-7","5.22.1-8","5.22.1-9","5.22.1-9ubuntu0.2","5.22.1-9ubuntu0.3","5.22.1-9ubuntu0.5","5.22.1-9ubuntu0.6","5.22.1-9ubuntu0.9","5.22.1-9ubuntu0.9+esm1","5.22.1-9ubuntu0.9+esm2","5.22.1-9ubuntu0.9+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"5.22.1-9ubuntu0.9+esm4","binary_name":"libperl5.22"},{"binary_name":"perl","binary_version":"5.22.1-9ubuntu0.9+esm4"},{"binary_version":"5.22.1-9ubuntu0.9+esm4","binary_name":"perl-base"},{"binary_name":"perl-debug","binary_version":"5.22.1-9ubuntu0.9+esm4"},{"binary_name":"perl-modules-5.22","binary_version":"5.22.1-9ubuntu0.9+esm4"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8736-1.json","cves_map":{"cves":[{"id":"CVE-2026-15534","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-19487"}],"ecosystem":"Ubuntu:Pro:16.04:LTS"}}},{"package":{"name":"perl","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.26.1-6ubuntu0.7+esm4"}]}],"versions":["5.26.0-8ubuntu1","5.26.1-2ubuntu1","5.26.1-3","5.26.1-4","5.26.1-4build1","5.26.1-5","5.26.1-6","5.26.1-6ubuntu0.1","5.26.1-6ubuntu0.2","5.26.1-6ubuntu0.3","5.26.1-6ubuntu0.5","5.26.1-6ubuntu0.6","5.26.1-6ubuntu0.7","5.26.1-6ubuntu0.7+esm2","5.26.1-6ubuntu0.7+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"5.26.1-6ubuntu0.7+esm4","binary_name":"libperl5.26"},{"binary_version":"5.26.1-6ubuntu0.7+esm4","binary_name":"perl"},{"binary_version":"5.26.1-6ubuntu0.7+esm4","binary_name":"perl-base"},{"binary_name":"perl-debug","binary_version":"5.26.1-6ubuntu0.7+esm4"},{"binary_name":"perl-modules-5.26","binary_version":"5.26.1-6ubuntu0.7+esm4"}],"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-8736-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2026-15534","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-19487","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"perl","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.30.0-9ubuntu0.5+esm4"}]}],"versions":["5.28.1-6build1","5.30.0-7","5.30.0-9","5.30.0-9build1","5.30.0-9ubuntu0.2","5.30.0-9ubuntu0.3","5.30.0-9ubuntu0.4","5.30.0-9ubuntu0.5","5.30.0-9ubuntu0.5+esm2","5.30.0-9ubuntu0.5+esm3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libperl5.30","binary_version":"5.30.0-9ubuntu0.5+esm4"},{"binary_name":"perl","binary_version":"5.30.0-9ubuntu0.5+esm4"},{"binary_version":"5.30.0-9ubuntu0.5+esm4","binary_name":"perl-base"},{"binary_name":"perl-debug","binary_version":"5.30.0-9ubuntu0.5+esm4"},{"binary_version":"5.30.0-9ubuntu0.5+esm4","binary_name":"perl-modules-5.30"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8736-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2026-15534","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-19487"}]}}},{"package":{"name":"perl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-3ubuntu1.9"}]}],"versions":["5.32.1-3ubuntu3","5.34.0-3ubuntu1","5.34.0-3ubuntu1.1","5.34.0-3ubuntu1.2","5.34.0-3ubuntu1.3","5.34.0-3ubuntu1.4","5.34.0-3ubuntu1.5","5.34.0-3ubuntu1.7","5.34.0-3ubuntu1.8"],"ecosystem_specific":{"binaries":[{"binary_name":"libperl5.34","binary_version":"5.34.0-3ubuntu1.9"},{"binary_name":"perl","binary_version":"5.34.0-3ubuntu1.9"},{"binary_name":"perl-base","binary_version":"5.34.0-3ubuntu1.9"},{"binary_version":"5.34.0-3ubuntu1.9","binary_name":"perl-debug"},{"binary_name":"perl-modules-5.34","binary_version":"5.34.0-3ubuntu1.9"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8736-1.json","cves_map":{"cves":[{"id":"CVE-2026-15534","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-19487","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"perl","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.40.1-7ubuntu0.2"}]}],"versions":["5.40.1-6build1","5.40.1-7build1","5.40.1-7ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libperl5.40","binary_version":"5.40.1-7ubuntu0.2"},{"binary_version":"5.40.1-7ubuntu0.2","binary_name":"perl"},{"binary_name":"perl-base","binary_version":"5.40.1-7ubuntu0.2"},{"binary_version":"5.40.1-7ubuntu0.2","binary_name":"perl-debug"},{"binary_name":"perl-modules-5.40","binary_version":"5.40.1-7ubuntu0.2"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-15534"},{"id":"CVE-2026-19487","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8736-1.json"}}],"schema_version":"1.9.0"}