{"id":"CVE-2026-44221","title":"ArcadeDB is a Multi-Model DBMS","summary":"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 …","severity":"critical","cvss":9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","cwe":["CWE-863"],"published":"2026-05-12","updated":"2026-08-03","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44221","references":[{"url":"https://github.com/ArcadeData/arcadedb/commit/04110c06315da55604ac107f71fe7182f3a3deb8","label":"security-advisories@github.com"},{"url":"https://github.com/ArcadeData/arcadedb/commit/9e708f116b","label":"security-advisories@github.com"},{"url":"https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-fxc7-fm93-6q77","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00397,"epssPercentile":0.33724,"ingestedAt":"2026-08-03T21:30:01.285Z","slug":"CVE-2026-44221","body":"## Overview\n\nArcadeDB 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":49.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}