{"id":"USN-7972-2","summary":"opencc vulnerability","details":"USN-7972-1 fixed a vulnerability in OpenCC. This update provides the\ncorresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that OpenCC incorrectly handled truncated UTF-8  input.\n An attacker could possibly use this issue to cause OpenCC to  crash,\n resulting in a denial of service.","modified":"2026-05-26T22:59:14.376593443Z","published":"2026-05-26T20:39:08Z","related":["UBUNTU-CVE-2025-15536"],"upstream":["CVE-2025-15536","UBUNTU-CVE-2025-15536"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7972-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-15536"}],"affected":[{"package":{"name":"opencc","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/opencc?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.4-5ubuntu0.1~esm1"}]}],"versions":["1.0.4-5"],"ecosystem_specific":{"binaries":[{"binary_name":"libopencc2","binary_version":"1.0.4-5ubuntu0.1~esm1"},{"binary_name":"libopencc2-data","binary_version":"1.0.4-5ubuntu0.1~esm1"},{"binary_name":"opencc","binary_version":"1.0.4-5ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-2.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-15536"}]}}},{"package":{"name":"opencc","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/opencc?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.5+git20190530-1ubuntu0.1~esm1"}]}],"versions":["1.0.5-2","1.0.5+git20190530-1","1.0.5+git20190530-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopencc2","binary_version":"1.0.5+git20190530-1ubuntu0.1~esm1"},{"binary_name":"libopencc2-data","binary_version":"1.0.5+git20190530-1ubuntu0.1~esm1"},{"binary_name":"opencc","binary_version":"1.0.5+git20190530-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-2.json","cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-15536"}]}}}],"schema_version":"1.7.5"}