{"id":"EUVD-2026-84528","revision":"d66d9a3aa5cc4d2c9374e6cd7fa5d19a","records":[{"revision":"d66d9a3aa5cc4d2c9374e6cd7fa5d19a","observedAt":"2026-11-07T14:30:07.797+00:00","statement":{"source":"euvd","id":"EUVD-2026-84528","aliases":["CVE-2026-77633","GHSA-xj3h-wwxq-gfcj"],"title":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, PrepareUpload in pkg/filemanager/fs/dbfs/upload.go checks a stale in-memory user storage value through validateUserCapacity and later applies an unconditional s…","description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, PrepareUpload in pkg/filemanager/fs/dbfs/upload.go checks a stale in-memory user storage value through validateUserCapacity and later applies an unconditional storage charge outside the same quota-enforcing transaction. An authenticated user with Files.Write permission can issue concurrent upload-session requests that read the same capacity snapshot, all pass the MaxStorage check, and reserve their declared sizes through CommitWithStorageDiff. The resulting reservations can exceed the account quota and can be materialized as chunked uploads that exhaust host storage and deny uploads to other users. The default local-storage policy and default User group are affected. This issue is fixed in version 4.18.0.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","score":7.1,"severity":null}],"references":["https://github.com/cloudreve/cloudreve/security/advisories/GHSA-xj3h-wwxq-gfcj","https://github.com/cloudreve/cloudreve/commit/7329602751c00bb4136fe9ad8b364d0df70773df","https://github.com/cloudreve/cloudreve/releases/tag/4.18.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-84528","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 22, 2026, 3:28:56 PM","dateUpdated":"Sep 25, 2026, 11:38:53 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-84528","identifiers":["EUVD-2026-84528","CVE-2026-77633","GHSA-xj3h-wwxq-gfcj"]},"retained":false,"historicalAffected":[]}],"coverage":[]}