CVE-2026-23511

{"id": "CVE-2026-23511", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2026-01-15T20:16:05.167", "references": [{"url": "https://github.com/zitadel/zitadel/commit/b85ab69e4679b0268e2b0e9b4cd04e934af10dd2", "tags": ["Patch"], "source": "[email protected]"}, {"url": "https://github.com/zitadel/zitadel/commit/c300d4cc6a2775ab17ddfe76492f24170f8b858d", "tags": ["Patch"], "source": "[email protected]"}, {"url": "https://github.com/zitadel/zitadel/releases/tag/v3.4.6", "tags": ["Release Notes"], "source": "[email protected]"}, {"url": "https://github.com/zitadel/zitadel/releases/tag/v4.9.1", "tags": ["Release Notes"], "source": "[email protected]"}, {"url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-pvm5-9frx-264r", "tags": ["Third Party Advisory"], "source": "[email protected]"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-204"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-01-20T16:44:43.437", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AFFBAC9C-9A67-4AF4-985C-31DCC2F1311D", "versionEndIncluding": "2.71.19", "versionStartIncluding": "2.0.0"}, {"criteria": "cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "35824976-F697-4F42-8224-C8CE077BAB46", "versionEndExcluding": "3.4.6", "versionStartIncluding": "3.0.0"}, {"criteria": "cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1B68D0EF-0AB9-4429-AA04-8FED60B814C9", "versionEndExcluding": "4.9.1", "versionStartIncluding": "4.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}