{"schema":"threatline.record/2","record":{"id":"CVE-2026-90800","aliases":[],"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.","categories":["Databases"],"product":"Apache CouchDB","vendor":"Apache Software Foundation","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-90800","source_modified_at":"2026-10-20T18:10:09.013Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Apache CouchDB","vendor":"Apache Software Foundation","versions":[{"status":"affected","version":"0","lessThan":"3.5.3","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-90800","source_modified_at":"2026-10-20T18:10:09.013Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Apache CouchDB","ecosystem":null},"version":"3.5.3","basis":"first unaffected version stated in the CVE record"}],"cvss":8.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00632,"percentile":0.49669,"score_date":"2026-10-23"},"published_at":"2026-10-20T15:40:47.497Z","modified_at":"2026-10-20T18:10:09.013Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-90800","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T18:10:09.013Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-90800","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f","tags":["release-notes"]},{"source":"CVE List","url":"https://lists.apache.org/thread/vng8vqjwgy1qlrv14wzrgs7pv4gj7gwr","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-20T16:57:29.708316Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-20T18:10:09.013Z","content_hash":"2272583fbf29c7aed5b4d057ad1f0b29d08611698acd512b4be4573a30f8cc43"}}