{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28288","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-02-26T01:52:58.735Z","datePublished":"2026-02-27T20:25:24.599Z","dateUpdated":"2026-02-27T20:45:44.126Z"},"containers":{"cna":{"title":"Dify has a user enumeration issue","problemTypes":[{"descriptions":[{"cweId":"CWE-204","lang":"en","description":"CWE-204: Observable Response Discrepancy","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"}}],"references":[{"name":"https://github.com/langgenius/dify/security/advisories/GHSA-9qpf-wcv3-w3qx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/langgenius/dify/security/advisories/GHSA-9qpf-wcv3-w3qx"},{"name":"https://github.com/langgenius/dify/issues/24323","tags":["x_refsource_MISC"],"url":"https://github.com/langgenius/dify/issues/24323"}],"affected":[{"vendor":"langgenius","product":"dify","versions":[{"version":"< 1.9.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-02-27T20:25:24.599Z"},"descriptions":[{"lang":"en","value":"Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an attacker to enumerate email addresses registered with Dify. Version 1.9.0 fixes the issue."}],"source":{"advisory":"GHSA-9qpf-wcv3-w3qx","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-27T20:44:24.552212Z","id":"CVE-2026-28288","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-27T20:45:44.126Z"}}]}}