{"id":"USN-7972-1","summary":"opencc vulnerability","details":"It was discovered that OpenCC incorrectly handled truncated UTF-8 input.\nAn attacker could possibly use this issue to cause OpenCC to crash,\nresulting in a denial of service.","modified":"2026-04-27T18:34:10.074491Z","published":"2026-01-21T17:35:53Z","related":["UBUNTU-CVE-2025-15536"],"upstream":["CVE-2025-15536","UBUNTU-CVE-2025-15536"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7972-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-15536"}],"affected":[{"package":{"name":"opencc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/opencc@1.1.3+ds1-3ubuntu3.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3+ds1-3ubuntu3.1"}]}],"versions":["1.1.1+git20200624+ds2-10ubuntu3","1.1.3+ds1-3ubuntu2","1.1.3+ds1-3ubuntu3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libopencc-data","binary_version":"1.1.3+ds1-3ubuntu3.1"},{"binary_name":"libopencc1.1","binary_version":"1.1.3+ds1-3ubuntu3.1"},{"binary_name":"opencc","binary_version":"1.1.3+ds1-3ubuntu3.1"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"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_V3"},{"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":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-15536"}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-1.json"}},{"package":{"name":"opencc","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/opencc@1.1.7+ds1-1ubuntu0.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.7+ds1-1ubuntu0.1"}]}],"versions":["1.1.6+ds1-1","1.1.7+ds1-1","1.1.7+ds1-1build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.1.7+ds1-1ubuntu0.1","binary_name":"libopencc-data"},{"binary_name":"libopencc1.1","binary_version":"1.1.7+ds1-1ubuntu0.1"},{"binary_name":"opencc","binary_version":"1.1.7+ds1-1ubuntu0.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-15536","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"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":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-1.json"}},{"package":{"name":"opencc","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/opencc@1.1.9+ds1-2ubuntu0.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.9+ds1-2ubuntu0.1"}]}],"versions":["1.1.9+ds1-1build1","1.1.9+ds1-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libopencc-data","binary_version":"1.1.9+ds1-2ubuntu0.1"},{"binary_name":"libopencc1.1","binary_version":"1.1.9+ds1-2ubuntu0.1"},{"binary_name":"opencc","binary_version":"1.1.9+ds1-2ubuntu0.1"},{"binary_name":"python3-opencc","binary_version":"1.1.9+ds1-2ubuntu0.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-15536","severity":[{"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_V3"},{"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":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:25.10"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-1.json"}}],"schema_version":"1.7.5"}