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    CVE-2026-75853

    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.

    Published:Aug 18, 2026
    Last Modified:Aug 18, 2026
    EPS:Aug 18, 2026
    EPSS Score:
    CVSS Score:8.8

    Affected Products

    Vendor
    Arcadedata
    Product
    Arcadedb

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

    CVE-2026-76225 (CVSS 8.3) — ArcadeDB before 26.8.1 contains a server-side request forgery vulnerability in the OpenCypher LOAD CSV impleme…
    CVE-2026-76224 (CVSS 8.7) — ArcadeDB before 26.8.1 (arcadedb-gremlin, affected <= 26.7.3) contains a remote code execution vulnerability i…
    CVE-2026-76223 (CVSS 7.1) — ArcadeDB (com.arcadedb) versions 26.7.3 and earlier fail to enforce the UPDATE_SCHEMA permission check when a …
    CVE-2026-75855 (CVSS 8.4) — ArcadeDB versions before 26.8.1 fail to sanitize database names in the POST /api/v1/server endpoint's create d…
    CVE-2026-75854 (CVSS 9.3) — ArcadeDB versions before 26.8.1 contain a missing authentication vulnerability in the Redis wire-protocol plug…
    CVE-2026-75852 (CVSS 9.3) — ArcadeDB versions before 26.8.1 fail to enforce SASL authentication on data commands in the MongoDB wire-proto…
    CVE-2026-75851 (CVSS 9.4) — ArcadeDB server (com.arcadedb:arcadedb-server) in versions 26.7.3 and earlier fails to propagate the authentic…
    CVE-2026-75850 (CVSS 2.3) — ArcadeDB before 26.8.1 fails to bind the authenticated principal (setCurrentUser) on its batch and time-series…
    CVE-2026-75846 (CVSS 7.1) — ArcadeDB before 26.8.1 (affected versions <= 26.7.3) contains a missing authorization vulnerability in the DEL…
    CVE-2026-75845 (CVSS 5.3) — ArcadeDB versions 26.4.2 through 26.7.3 contain an authorization bypass vulnerability in the set_server_settin…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High