CVE-2026-75853
ArcadeDB Gremlin Wire Protocol Authorization Bypass Cross-Database
- State
- Published
- Severity
- 8.7 High
- Published
- Aug 18, 2026
- Updated
- Aug 18, 2026
- Reserved
- Aug 18, 2026
Description
ArcadeDB's Gremlin wire-protocol plugin (com.arcadedb:arcadedb-gremlin) in versions <= 26.7.3 enforces authentication (SASL PLAIN) but performs no authorization: it never checks database access permissions (canAccessToDatabase) and never binds the authenticated principal into the engine. As a result, any valid server credential — even one provisioned for zero or one unrelated database — can read, write, and drop data in any database on the server by selecting a target database via a traversal-source alias, completely bypassing the engine's per-type/read-only/UPDATE_SCHEMA ACLs. The issue is fixed in version 26.8.1.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
arcadedbArcadeData |
|
References
- GitHub Security Advisory (GHSA-c287-v325-j5jx)vendor-advisory
- VulnCheck Advisory: ArcadeDB Gremlin Wire Protocol Authorization Bypass Cross-Databasethird-party-advisory
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