{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-56668", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-22T16:39:01.043Z", "datePublished": "2026-07-10T17:46:25.937Z", "dateUpdated": "2026-07-10T17:46:25.937Z"}, "containers": {"cna": {"title": "ZITADEL: Unauthorized Token Privilege Escalation in OAuth2 Token Exchange", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/zitadel/zitadel/security/advisories/GHSA-vrh8-c9cm-wh8v", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-vrh8-c9cm-wh8v"}, {"name": "https://github.com/zitadel/zitadel/commit/e2886a61670ca8fd41c9434f87036546e5620bcc", "tags": ["x_refsource_MISC"], "url": "https://github.com/zitadel/zitadel/commit/e2886a61670ca8fd41c9434f87036546e5620bcc"}, {"name": "https://github.com/zitadel/zitadel/releases/tag/v4.15.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/zitadel/zitadel/releases/tag/v4.15.3"}], "affected": [{"vendor": "zitadel", "product": "zitadel", "versions": [{"version": "< 4.15.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-10T17:46:25.937Z"}, "descriptions": [{"lang": "en", "value": "ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's OAuth2 Token Exchange endpoint for urn:ietf:params:oauth:grant-type:token-exchange does not verify that the subject token belongs to the requesting client or that requested scopes remain within the original token's scopes, allowing a low-privilege token to be exchanged for elevated permissions at another application. This issue is fixed in version 4.15.3."}], "source": {"advisory": "GHSA-vrh8-c9cm-wh8v", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.15.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "zitadel", "source": "cna", "vendor": "zitadel"}, "product": "zitadel", "vendor": "zitadel"}], "created": "2026-07-10T19:30:04.401431+00:00", "updated": "2026-07-10T19:30:04.401453+00:00", "vendors": ["zitadel", "zitadel$PRODUCT$zitadel"]}