{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47840", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-05-20T10:00:51.003Z", "datePublished": "2026-07-09T06:26:02.169Z", "dateUpdated": "2026-07-09T06:26:02.169Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-07-09T06:26:02.169Z"}, "title": "LDAP StartTLS unconditionally disables hostname verification", "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-297 Improper Validation of Certificate with Host Mismatch", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "LDAP directory impersonation via man-in-the-middle, leading to credential harvesting and forged group memberships granting admin scopes."}]}], "affected": [{"vendor": "CloudFoundry Foundation", "product": "UAA", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThan": "78.13.0"}], "defaultStatus": "unaffected"}, {"vendor": "CloudFoundry Foundation", "product": "Cf-deployment", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThan": "56.2.0"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A network attacker positioned between UAA and its LDAP directory can impersonate the directory using any certificate from any trusted CA, then harvest the LDAP bind password and every end-user password sent during simple-bind authentication, and return forged group memberships that grant themselves admin scopes. This affects every deployment that authenticates users against LDAP over StartTLS.\nAffected versions: UAA versions prior to v78.13.0; Cf-deployment versions prior to v56.2.0.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A network attacker positioned between UAA and its LDAP directory can impersonate the directory using any certificate from any trusted CA, then harvest the LDAP bind password and every end-user password sent during simple-bind authentication, and return forged group memberships that grant themselves admin scopes. This affects every deployment that authenticates users against LDAP over StartTLS.<br>Affected versions: UAA versions prior to v78.13.0; Cf-deployment versions prior to v56.2.0."}]}], "references": [{"url": "https://www.cloudfoundry.org/blog/cve-2026-47840-ldap-starttls-unconditionally-disables-hostname-verification/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}}], "source": {"discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,56.2.0)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Cf-deployment", "source": "cna", "vendor": "CloudFoundry Foundation"}, "product": "cf-deployment", "vendor": "cloudfoundry"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,78.13.0)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "UAA", "source": "cna", "vendor": "CloudFoundry Foundation"}, "product": "uaa", "vendor": "cloudfoundry"}], "created": "2026-07-09T08:30:03.700932+00:00", "updated": "2026-07-09T08:30:03.700979+00:00", "vendors": ["cloudfoundry", "cloudfoundry$PRODUCT$cf-deployment", "cloudfoundry$PRODUCT$uaa"]}