{"id":"CVE-2026-55496","state":"PUBLISHED","title":"Cloudreve: Inactive/banned account emails leaked via GET /api/v4/user/search because SearchActive() omits the active-status predicate","description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, GET /api/v4/user/search calls SearchActive without adding a StatusActive predicate and serializes matches at RedactLevelUser, allowing any logged-in user to enumerate email addresses and profile metadata for inactive or banned accounts. The service calls userClient.SearchActive, but despite its name that method filters only by email/nickname keyword and never adds a StatusActive predicate — while the sibling lookups GetActiveByID and GetActiveByDavAccount, defined a few lines above it, do. Search hits are serialized at RedactLevelUser, which includes the email address. This issue is fixed in version 4.17.0.","publishedAt":"2026-07-31T03:23:33.099Z","updatedAt":"2026-07-31T14:02:34.248Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["cloudreve cloudreve"],"affected":[{"vendor":"cloudreve","product":"cloudreve","versions":[{"version":"4.17.0","status":"affected"}]}],"references":["https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv","https://github.com/cloudreve/cloudreve/commit/7e1289d552794bdbeb551be78456115c87dcb3da","https://github.com/cloudreve/cloudreve/releases/tag/4.17.0"],"weaknesses":["CWE-200","CWE-359"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55496.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55496","state":"PUBLISHED","datePublished":"2026-07-31T03:23:33.099Z","dateUpdated":"2026-07-31T14:02:34.248Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T22:28:27.062Z"},"containers":{"cna":{"title":"Cloudreve: Inactive/banned account emails leaked via GET /api/v4/user/search because SearchActive() omits the active-status predicate","descriptions":[{"lang":"en","value":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, GET /api/v4/user/search calls SearchActive without adding a StatusActive predicate and serializes matches at RedactLevelUser, allowing any logged-in user to enumerate email addresses and profile metadata for inactive or banned accounts. The service calls userClient.SearchActive, but despite its name that method filters only by email/nickname keyword and never adds a StatusActive predicate — while the sibling lookups GetActiveByID and GetActiveByDavAccount, defined a few lines above it, do. Search hits are serialized at RedactLevelUser, which includes the email address. This issue is fixed in version 4.17.0."}],"affected":[{"vendor":"cloudreve","product":"cloudreve","versions":[{"version":"4.17.0","status":"affected"}]}],"references":[{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv","name":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/cloudreve/cloudreve/commit/7e1289d552794bdbeb551be78456115c87dcb3da","name":"https://github.com/cloudreve/cloudreve/commit/7e1289d552794bdbeb551be78456115c87dcb3da","tags":["x_refsource_MISC"]},{"url":"https://github.com/cloudreve/cloudreve/releases/tag/4.17.0","name":"https://github.com/cloudreve/cloudreve/releases/tag/4.17.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-359","lang":"en","description":"CWE-359: Exposure of Private Personal Information to an Unauthorized Actor","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-31T03:23:33.099Z"},"source":{"advisory":"GHSA-8r7f-r8hj-r3rv","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-31T14:00:41.421611Z","id":"CVE-2026-55496","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-31T14:02:34.248Z"}}]}}}