CVE-2026-55670

ZITADEL: Cross-Tenant User Leakage via Recycled Identifiers

Published Jul 10, 2026 CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-6x8v-2fq5-2229 ZITADEL: Cross-Tenant User Leakage via Recycled Identifiers
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Zitadel
Zitadel zitadel
Vendors & Products Zitadel
Zitadel zitadel
Type Values Removed Values Added
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.
Title ZITADEL: Cross-Tenant User Leakage via Recycled Identifiers
Weaknesses CWE-284
CWE-639
References
Metrics cvssV4_0

{'score': 2.3, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 10, 2026, 8:58 PM
Reserved
Jun 17, 2026, 12:05 AM
Status
Deferred
Published
Jul 10, 2026, 6:16 PM
Modified
Jul 10, 2026, 9:16 PM