Answer in brief
CVE-2026-65831 records a High severity (CVSS 7.7) vulnerability in ArcadeDB: Privilege escalation via reader role in /api/v1/command JS scripting language — arbitrary host file read. The current sources do not mark it as known exploited. The current feed maps ArcadeData/arcadedb (generic), com.arcadedb/arcadedb-server (generic), com.arcadedb:arcadedb-server (maven), com.arcadedb:arcadedb-server (maven). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ArcadeData/arcadedb (generic), com.arcadedb/arcadedb-server (generic), com.arcadedb:arcadedb-server (maven), com.arcadedb:arcadedb-server (maven). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ArcadeData/arcadedbgeneric | <26.7.1 | 26.7.1 |
| com.arcadedb/arcadedb-servergeneric | <26.7.1 | 26.7.1 |
| com.arcadedb:arcadedb-servermaven | <26.7.1 | 26.7.1 |
| com.arcadedb:arcadedb-servermaven | >=0 <26.7.1 | 26.7.1 |
Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.