Vulnerability in Zitadel
CVE-2026-23511
ZITADEL is an open source identity management platform. Prior to 4.9.1 and 3.4.6, a user enumeration vulnerability has been discovered in Zitadel's login interfaces. An unauthenticated attacker can exploit this flaw to confirm the existenc…
EPSS: 0.004 (28.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Zitadel — versions >= 4.0.0, < 4.9.1, < 3.4.6
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-23511?
- CVE-2026-23511 is a medium-severity vulnerability in Zitadel, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-01-15.
- How severe is CVE-2026-23511?
- Medium severity. CVSS v3 base score is 5.3 out of 10.