{"id":"USN-7945-1","summary":"libxslt vulnerability","details":"Ivan Fratric discovered that Libxslt was vulnerable to type confusion when\nperforming XML transformations. An attacker could possibly use this issue\nto cause Libxslt to crash or corrupt memory, causing a denial of service or\nundefined behavior.","modified":"2026-06-25T13:32:31.590283097Z","published":"2026-01-07T13:06:15Z","related":["UBUNTU-CVE-2025-7424"],"upstream":["UBUNTU-CVE-2025-7424"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7945-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-7424"}],"affected":[{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.28-2ubuntu0.2+esm5"}]}],"versions":["1.1.28-2","1.1.28-2build1","1.1.28-2ubuntu0.1","1.1.28-2ubuntu0.2","1.1.28-2ubuntu0.2+esm1","1.1.28-2ubuntu0.2+esm2","1.1.28-2ubuntu0.2+esm3","1.1.28-2ubuntu0.2+esm4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_version":"1.1.28-2ubuntu0.2+esm5","binary_name":"libxslt1.1"},{"binary_name":"python-libxslt1","binary_version":"1.1.28-2ubuntu0.2+esm5"},{"binary_name":"xsltproc","binary_version":"1.1.28-2ubuntu0.2+esm5"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-7424","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:14.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7945-1.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.28-2.1ubuntu0.3+esm4"}]}],"versions":["1.1.28-2build2","1.1.28-2.1","1.1.28-2.1ubuntu0.1","1.1.28-2.1ubuntu0.2","1.1.28-2.1ubuntu0.3","1.1.28-2.1ubuntu0.3+esm1","1.1.28-2.1ubuntu0.3+esm2","1.1.28-2.1ubuntu0.3+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.28-2.1ubuntu0.3+esm4"},{"binary_version":"1.1.28-2.1ubuntu0.3+esm4","binary_name":"python-libxslt1"},{"binary_version":"1.1.28-2.1ubuntu0.3+esm4","binary_name":"xsltproc"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-7424"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7945-1.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.29-5ubuntu0.3+esm3"}]}],"versions":["1.1.29-2.1ubuntu1","1.1.29-4","1.1.29-5","1.1.29-5ubuntu0.1","1.1.29-5ubuntu0.2","1.1.29-5ubuntu0.3","1.1.29-5ubuntu0.3+esm1","1.1.29-5ubuntu0.3+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.29-5ubuntu0.3+esm3"},{"binary_name":"python-libxslt1","binary_version":"1.1.29-5ubuntu0.3+esm3"},{"binary_name":"xsltproc","binary_version":"1.1.29-5ubuntu0.3+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7945-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-7424"}]}}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.34-4ubuntu0.20.04.3+esm2"}]}],"versions":["1.1.33-0ubuntu1","1.1.33-0ubuntu2","1.1.33-0ubuntu3","1.1.34-1","1.1.34-1ubuntu1","1.1.34-3","1.1.34-4","1.1.34-4ubuntu0.20.04.1","1.1.34-4ubuntu0.20.04.2","1.1.34-4ubuntu0.20.04.3","1.1.34-4ubuntu0.20.04.3+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.34-4ubuntu0.20.04.3+esm2"},{"binary_name":"xsltproc","binary_version":"1.1.34-4ubuntu0.20.04.3+esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-7424","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7945-1.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.34-4ubuntu0.22.04.5"}]}],"versions":["1.1.34-4","1.1.34-4build1","1.1.34-4build2","1.1.34-4ubuntu0.22.04.1","1.1.34-4ubuntu0.22.04.2","1.1.34-4ubuntu0.22.04.3","1.1.34-4ubuntu0.22.04.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.1.34-4ubuntu0.22.04.5","binary_name":"libxslt1.1"},{"binary_name":"xsltproc","binary_version":"1.1.34-4ubuntu0.22.04.5"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-7424"}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7945-1.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.39-0exp1ubuntu0.24.04.3"}]}],"versions":["1.1.35-1","1.1.39-0exp1","1.1.39-0exp1build1","1.1.39-0exp1ubuntu0.24.04.1","1.1.39-0exp1ubuntu0.24.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.1.39-0exp1ubuntu0.24.04.3","binary_name":"libxslt1.1"},{"binary_name":"xsltproc","binary_version":"1.1.39-0exp1ubuntu0.24.04.3"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-7424","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7945-1.json"}}],"schema_version":"1.7.5"}