Vulnerability Description
ArcadeDB is a Multi-Model DBMS. Prior to 26.7.1, a reader-role user can submit POST /api/v1/command/{database} with language: js because PolyglotQueryEngine.command, PolyglotQueryEngine.analyze, and PolyglotQueryEngine.registerFunctions do not enforce database-administrator authorization. GraalPolyglotEngine also permits scripts to bypass the allowedPackages whitelist by reflecting from the bound database object through database.getClass().getClassLoader().loadClass to arbitrary host classes. These cooperating defects allow a read-only database user to read arbitrary host files outside the database scope. Process creation is already blocked, so OS command execution is not confirmed. The issue is distinct from CVE-2026-44221, CVE-2026-54076, and CVE-2026-54077. This issue is fixed in version 26.7.1.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/ArcadeData/arcadedb/commit/8ca396c07e471a0b97fee075eeb956b5e2
- https://github.com/ArcadeData/arcadedb/releases/tag/26.7.1
- https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-48qw-824m-86pr
FAQ
What is CVE-2026-65831?
CVE-2026-65831 is a vulnerability with a CVSS score of 7.7 (HIGH). ArcadeDB is a Multi-Model DBMS. Prior to 26.7.1, a reader-role user can submit POST /api/v1/command/{database} with language: js because PolyglotQueryEngine.command, PolyglotQueryEngine.analyze, and P...
How severe is CVE-2026-65831?
CVE-2026-65831 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-65831?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.