{"id":"CVE-2026-44221","aliases":["GHSA-fxc7-fm93-6q77"],"url":"https://o3.security/vulnerability/CVE-2026-44221","summary":"ArcadeDB: Cross-database authorization bypass and unsecured newly-created databases","details":"ArcadeDB is a Multi-Model DBMS. Starting in version 21.10.1 and prior to version 26.4.2, authenticated users and API tokens scoped to a specific database could read, write, and mutate schema on any other database on the same server. Two distinct defects contributed: (1) ServerSecurityUser.getDatabaseUser() returned a DB user with an uninitialized fileAccessMap, which requestAccessOnFile treated as allow-all; (2) ArcadeDBServer.createDatabase() omitted factory.setSecurity(...) so any database created via POST /api/v1/server {\"command\":\"create database X\"} had its entire record-level authorization system silently disabled. In combination, record-level and database-level authorization could be bypassed by any authenticated principal. This vulnerability is fixed in 26.4.2.","published":"2026-05-12T19:53:39.307Z","modified":"2026-08-12T16:24:29.129270Z","cvss":{"score":9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"},"epss":{"score":0.00397,"percentile":0.32509,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"com.arcadedb:arcadedb-server","fixedVersion":"26.4.2"}],"fix":{"url":"https://github.com/ArcadeData/arcadedb/commit/04110c06315da55604ac107f71fe7182f3a3deb8","label":"ArcadeData/arcadedb@04110c0"},"references":[{"type":"ADVISORY","url":"https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-fxc7-fm93-6q77"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44221.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44221"},{"type":"FIX","url":"https://github.com/ArcadeData/arcadedb/commit/04110c06315da55604ac107f71fe7182f3a3deb8"},{"type":"FIX","url":"https://github.com/ArcadeData/arcadedb/commit/9e708f116b"},{"type":"PACKAGE","url":"https://github.com/ArcadeData/arcadedb"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T16:24:29.129270Z"}}