{"id":"CLEANSTART-2026-NB17779","summary":"jackson-databind validates the outer class of a class-name type ID but accepts attacker-selected classes inside its generic arguments, even when those classes violate the declared type or would be ...","details":"Security vulnerability affects the keycloak package. jackson-databind validates the outer class of a class-name type ID but accepts attacker-selected classes inside its generic arguments, even when those classes violate the declared type or would be rejected as direct type IDs.","modified":"2026-11-05T00:45:03.906734663Z","published":"2026-11-05T00:37:25.368223Z","upstream":["CVE-2026-110879"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-NB17779.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-110879"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110879"}],"affected":[{"package":{"name":"keycloak","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/keycloak"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.8.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-NB17779.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}