{"id":"BIT-couchdb-2026-90800","summary":"Apache CouchDB: Auth bypass in prefixed _users and _replicator databases","details":"Missing authorisation checks in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any request to read the full contents of a prefixed _user or _replicator database via an unauthorised API endpoint.\n\n\nThe use of prefixed system databases is very rare.\n\nUsers are recommended to upgrade to version 3.5.3, which fixes this issue.","aliases":["CVE-2026-90800"],"modified":"2026-10-29T10:45:05.844230947Z","published":"2026-10-29T08:39:50.639Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:apache:couchdb:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/10/20/15"},{"type":"WEB","url":"https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f"},{"type":"WEB","url":"https://lists.apache.org/thread/vng8vqjwgy1qlrv14wzrgs7pv4gj7gwr"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90800"}],"affected":[{"package":{"name":"couchdb","ecosystem":"Bitnami","purl":"pkg:bitnami/couchdb"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.5.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/couchdb/BIT-couchdb-2026-90800.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Amber"}]}],"schema_version":"1.9.2"}