ArcadeDB Gremlin Wire Protocol Authorization Bypass Cross-Database
Published Aug 18, 2026
8.7
HIGHCVSS 4.0
EPSS 0.59%
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.
Affected products
-
- Version 0StatusaffectedConstraints<26.8.1
- Version 26.8.1StatusunaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ArcadeData | Arcadedb | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Aug 18, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.59% (0.00589) | 46.18th | v5 (v2026.06.15) |
| Aug 19, 2026 | 0.39% (0.00393) | 32.60th | v5 (v2026.06.15) |
References (2)
- https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-c287-v325-j5jx exploitvendor-advisory
- https://www.vulncheck.com/advisories/arcadedb-gremlin-wire-protocol-authorization-bypass-cross-database third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-c287-v325-j5jx | exploitvendor-advisory | |
| https://www.vulncheck.com/advisories/arcadedb-gremlin-wire-protocol-authorization-bypass-cross-database | third-party-advisory |
Change history (0)
No recorded changes yet.