{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-22734", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-01-09T06:54:41.498Z", "datePublished": "2026-04-16T23:33:43.596Z", "dateUpdated": "2026-04-16T23:33:43.596Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-04-16T23:33:43.596Z"}, "title": "Cloud Foundry UAA SAML 2.0 Signature Bypass", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-290", "description": "CWE-290 Authentication bypass by spoofing", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-646", "descriptions": [{"lang": "en", "value": "CAPEC-646 Peripheral Footprinting"}]}], "affected": [{"vendor": "Cloud Foundry", "product": "UUA", "versions": [{"status": "affected", "version": "v77.21.0", "lessThanOrEqual": "v78.8.0", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Cloud Foundry UUA is\u00a0vulnerable to a bypass that allows an attacker to obtain a token for any user and gain access to UAA-protected systems. This vulnerability exists when SAML 2.0 bearer assertions are enabled for a client, as the UAA accepts SAML 2.0 bearer assertions that are neither signed nor encrypted.\u00a0This issue affects UUA\u00a0from v77.30.0 to v78.7.0 (inclusive)\u00a0and it affects\u00a0CF Deployment\u00a0from v48.7.0 to v54.14.0 (inclusive).", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Cloud Foundry UUA is<span>&nbsp;vulnerable to a bypass that allows an attacker to obtain a token for any user and gain access to UAA-protected systems. This vulnerability exists when SAML 2.0 bearer assertions are enabled for a client, as the UAA accepts SAML 2.0 bearer assertions that are neither signed nor encrypted.&nbsp;</span><span>This issue affects UUA</span><span>&nbsp;from v77.30.0 to v78.7.0 (inclusive)&nbsp;</span><span>and it affects&nbsp;</span><span>CF Deployment&nbsp;</span><span>from v48.7.0 to v54.14.0 (inclusive).</span>"}]}], "references": [{"url": "https://www.cloudfoundry.org/blog/cve-2026-22734-uaa-saml-2-0-signature-bypass/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseSeverity": "HIGH", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Cloud Foundry UUA is\u00a0vulnerable to a bypass that allows an attacker to obtain a token for any user and gain access to UAA-protected systems. This vulnerability exists when SAML 2.0 bearer assertions are enabled for a client, as the UAA accepts SAML 2.0 bearer assertions that are neither signed nor encrypted.\u00a0This issue affects UUA\u00a0from v77.30.0 to v78.7.0 (inclusive)\u00a0and it affects\u00a0CF Deployment\u00a0from v48.7.0 to v54.14.0 (inclusive)."}], "id": "CVE-2026-22734", "lastModified": "2026-04-17T01:17:37.107", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "security@vmware.com", "type": "Secondary"}]}, "published": "2026-04-17T01:17:37.107", "references": [{"source": "security@vmware.com", "url": "https://www.cloudfoundry.org/blog/cve-2026-22734-uaa-saml-2-0-signature-bypass/"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "security@vmware.com", "type": "Secondary"}]}

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