Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate to one database over Bolt
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ExploitIssue SHOW DATABASES query
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ImpactEnumerate unauthorized database names
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Requires a valid authenticated account on at least one database on the instance (PR:L), and the Bolt protocol handler/port must be enabled and network-reachable to the attacker. Exploitation is a single SHOW DATABASES query - no special complexity, user interaction, or non-default feature beyond Bolt being exposed. The limiting factor is the credential requirement: an unauthenticated outsider cannot trigger this, so realistic risk is confined to existing authenticated users (e.g., one tenant enumerating other tenants) or an attacker who has already obtained database credentials. Impact is limited to disclosure of database names (tenant/project identifiers), not their contents. |
| Impact | This is a genuinely low-to-moderate priority issue, and the signals are internally consistent rather than conflicting. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N) describes a network-reachable, low-complexity attack that nevertheless requires existing credentials (PR:L) and yields only limited confidentiality impact (VC:L), with no integrity or availability impact and no scope change (VI:N/VA:N/SC:N). CWE-862 (Missing Authorization) matches the description precisely: an already-authenticated user crosses an authorization boundary to read metadata they should not see. No EPSS score, KEV listing, or POC was provided in the input, so there is no public exploit identified at time of analysis and no evidence of active exploitation. The practical risk is an information-disclosure/reconnaissance aid (leaking tenant or project database names), not direct compromise. The low CVSS of 5.3 accurately reflects real-world risk here - this is a confidentiality-only metadata leak gated behind valid credentials, not a high-CVSS-but-overstated finding nor an understated one. Note the 'Authentication Bypass' tag is a mischaracterization: exploitation requires valid authentication (PR:L) and the flaw is a missing authorization check, not an authentication bypass. |
| Exploit ScenarioDerived | An attacker who already holds valid credentials to any single ArcadeDB database (for example, a low-privilege tenant in a multi-tenant deployment) connects over the Bolt protocol port and issues a SHOW DATABASES query. Because the Bolt handler fails to enforce per-database authorization, the response enumerates the names of all databases on the instance, revealing other tenants' or projects' identifiers that can seed further targeted attacks. No public exploit code was identified at time of analysis, though the query itself is trivial to issue with a standard Bolt client. |
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Alert meAnalysisAIv1 – Oct 21, 2026
Authenticated users with credentials for any single ArcadeDB database can issue a SHOW DATABASES query over the Bolt protocol to enumerate every database name on the instance, exposing tenant or project identifiers beyond their authorized database. The issue affects ArcadeDB versions from 26.2.1 before 26.10.1 and is rooted in a missing authorization check (CWE-862) in the Bolt handler; impact is limited to database-name disclosure rather than database contents. The assessed CVSS 3.1 score is 5.3, reflecting network reachability but a requirement for valid credentials and only low confidentiality impact; no public exploit identified at time of analysis.
RemediationAI
Upgrade to ArcadeDB 26.10.1 or later, the first version outside the affected range, per the vendor advisory at https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-7fcg-pg8x-wf7w; the VulnCheck advisory at https://www.vulncheck.com/advisories/arcadedb-26.2.1-before-26.10.1-bolt-show-databases-information-disclosure provides additional tracking information. If immediate upgrade is not possible, disable the Bolt protocol handler or listener when Bolt clients are not required, which removes the attack surface but breaks Bolt-based applications. Alternatively, restrict network access to the Bolt port with firewall rules or security groups so only trusted application networks can connect; this lowers exposure but does not correct the missing authorization for permitted authenticated users. For multi-tenant deployments, isolate tenants on separate ArcadeDB instances or enforce strict credential segmentation and audit SHOW DATABASES usage, recognizing that these controls add operational overhead and do not replace the patch.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
ArcadeDB is a multi-model database that exposes the Bolt protocol through a dedicated handler, allowing Bolt-speaking clients to interact with the database server. CWE-862 (Missing Authorization) describes the root cause: the Bolt handler processes SHOW DATABASES without verifying that the authenticated principal is authorized to see each database, so a valid credential for one database is treated as sufficient to list the instance-wide database catalog. The CPE cpe:2.3:a:arcadedata:arcadedb:*:*:*:*:*:*:*:* identifies ArcadeDB as the affected product, with the vulnerable range spanning 26.2.1 before 26.10.1. This is not a memory-safety or code-execution flaw; it is an access-control gap whose exposure depends on the Bolt handler being enabled and network-reachable and on the attacker holding a valid database account.
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Network Bolt access with valid credentials (PR:L), trivial query (AC:L); only database-name metadata leaks, so C:L and I:N/A:N, scope unchanged.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
1DescriptionCVE.org
ArcadeDB from 26.2.1 before 26.10.1 contains a missing authorization vulnerability in the Bolt protocol handler that allows authenticated users to enumerate all database names. Attackers with credentials for any single database can issue a SHOW DATABASES query over the Bolt port to reveal unauthorized database names, exposing tenant or project identifiers.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2026-107008
GHSA-vp2h-6426-v5wh
NVD
CVE.org
EPSS
Exploit-DB