{"id":"USN-7787-1","summary":"libxslt vulnerabilities","details":"Ivan Fratric discovered that Libxslt did not correctly handle certain\nmemory operations. An attacker could possibly use this issue to execute\narbitrary code or cause a denial of service.","modified":"2026-04-22T11:02:45.008972Z","published":"2025-09-30T23:47:26Z","related":["UBUNTU-CVE-2024-55549","UBUNTU-CVE-2025-24855"],"upstream":["CVE-2024-55549","CVE-2025-24855","UBUNTU-CVE-2024-55549","UBUNTU-CVE-2025-24855"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7787-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-55549"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-24855"}],"affected":[{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libxslt@1.1.28-2ubuntu0.2+esm4?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.28-2ubuntu0.2+esm4"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.28-2ubuntu0.2+esm4"},{"binary_name":"python-libxslt1","binary_version":"1.1.28-2ubuntu0.2+esm4"},{"binary_name":"xsltproc","binary_version":"1.1.28-2ubuntu0.2+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-7787-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2024-55549"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-24855"}],"ecosystem":"Ubuntu:Pro:14.04:LTS"}}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxslt@1.1.28-2.1ubuntu0.3+esm3?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.28-2.1ubuntu0.3+esm3"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.28-2.1ubuntu0.3+esm3"},{"binary_name":"python-libxslt1","binary_version":"1.1.28-2.1ubuntu0.3+esm3"},{"binary_name":"xsltproc","binary_version":"1.1.28-2.1ubuntu0.3+esm3"}],"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-7787-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2024-55549"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-24855"}],"ecosystem":"Ubuntu:Pro:16.04:LTS"}}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libxslt@1.1.29-5ubuntu0.3+esm2?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.29-5ubuntu0.3+esm2"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.29-5ubuntu0.3+esm2"},{"binary_name":"python-libxslt1","binary_version":"1.1.29-5ubuntu0.3+esm2"},{"binary_name":"xsltproc","binary_version":"1.1.29-5ubuntu0.3+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-7787-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2024-55549"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-24855"}],"ecosystem":"Ubuntu:Pro:18.04:LTS"}}}],"schema_version":"1.7.5"}