CVE Explorer
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 existence of valid user accounts by iterating through usernames and userIDs. This vulnerability is fixed in 4.9.1 and 3.4.6.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"zitadel","vendor":"zitadel","versions":[{"status":"affected","version":">= 4.0.0, < 4.9.1"},{"status":"affected","version":"< 3.4.6"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-204","description":"CWE-204: Observable Response Discrepancy","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"name":"https://github.com/zitadel/zitadel/commit/b85ab69e4679b0268e2b0e9b4cd04e934af10dd2","tags":["x_refsource_MISC"],"url":"https://github.com/zitadel/zitadel/commit/b85ab69e4679b0268e2b0e9b4cd04e934af10dd2"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/references/1
{"name":"https://github.com/zitadel/zitadel/commit/c300d4cc6a2775ab17ddfe76492f24170f8b858d","tags":["x_refsource_MISC"],"url":"https://github.com/zitadel/zitadel/commit/c300d4cc6a2775ab17ddfe76492f24170f8b858d"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/references/2
{"name":"https://github.com/zitadel/zitadel/releases/tag/v3.4.6","tags":["x_refsource_MISC"],"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.6"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/references/3
{"name":"https://github.com/zitadel/zitadel/releases/tag/v4.9.1","tags":["x_refsource_MISC"],"url":"https://github.com/zitadel/zitadel/releases/tag/v4.9.1"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/references/4
{"name":"https://github.com/zitadel/zitadel/security/advisories/GHSA-pvm5-9frx-264r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-pvm5-9frx-264r"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e0278c875d8263789bcad193ef29a72525319d0b6767e386fb121771d3063dec · sha256:53322578f397bbdf… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.