{"id":"CVE-2026-54562","state":"PUBLISHED","title":"Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses","description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1.","publishedAt":"2026-07-15T14:37:37.176Z","updatedAt":"2026-07-15T15:00:16.053Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["cloudreve cloudreve"],"affected":[{"vendor":"cloudreve","product":"cloudreve","versions":[{"version":"< 4.16.1","status":"affected"}]}],"references":["https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m","https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312","https://github.com/cloudreve/cloudreve/releases/tag/4.16.1"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54562.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54562","state":"PUBLISHED","datePublished":"2026-07-15T14:37:37.176Z","dateUpdated":"2026-07-15T15:00:16.053Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-15T19:04:14.457Z"},"containers":{"cna":{"title":"Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses","descriptions":[{"lang":"en","value":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1."}],"affected":[{"vendor":"cloudreve","product":"cloudreve","versions":[{"version":"< 4.16.1","status":"affected"}]}],"references":[{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m","name":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312","name":"https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312","tags":["x_refsource_MISC"]},{"url":"https://github.com/cloudreve/cloudreve/releases/tag/4.16.1","name":"https://github.com/cloudreve/cloudreve/releases/tag/4.16.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-15T14:37:37.176Z"},"source":{"advisory":"GHSA-x756-g4x3-c64m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T15:00:11.592846Z","id":"CVE-2026-54562","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":"2026-07-15T15:00:16.053Z"}}]}}}