{"id":"CVE-2026-55670","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-55670","generatedAt":"2026-10-28T02:21:37.401Z","title":"Prior to 4.15.1, ZITADEL's event store validation can retain the original resource owner for a deleted user identifier, causing a later user recreated with the same identifier in another organization to be provisioned under the original organization and…","description":"ZITADEL is an open source identity management platform. Prior to 4.15.1, ZITADEL's event store validation can retain the original resource owner for a deleted user identifier, causing a later user recreated with the same identifier in another organization to be provisioned under the original organization and exposed to that organization's administrator. This issue is fixed in version 4.15.2.","published":"2026-07-10T18:16:23.000Z","lastModified":"2026-07-10T21:16:57.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":2.3,"severity":"LOW","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-284","CWE-639"],"affected":[],"epss":{"score":0.00362,"percentile":0.29739,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/zitadel/zitadel/commit/a939b847d90c3370bd162064e57764b89c01be46","source":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/pull/12261","source":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.15.2","source":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-6x8v-2fq5-2229","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-55670","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}