CVE-2026-55670

EUVD-2026-42977
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
2.3 LOW
NETWORK
HIGH
LOW
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
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
zitadelzitadel
𝑥
< 4.15.2
CNA
Common Weakness Enumeration
References
https://github.com/zitadel/zitadel/commit/a939b847d90c3370bd162064e57764b89c01be46
https://github.com/zitadel/zitadel/pull/12261
https://github.com/zitadel/zitadel/releases/tag/v4.15.2
https://github.com/zitadel/zitadel/security/advisories/GHSA-6x8v-2fq5-2229