CVE-2026-35402: CWE-284: Improper Access Control in neo4j-contrib mcp-neo4j
CVE-2026-35402 is a low-severity vulnerability in the mcp-neo4j component of neo4j-contrib, affecting versions prior to 0. 6. 0. The issue allows bypassing the read_only mode enforcement via APOC CALL procedures, which could enable unauthorized write operations or server-side request forgery. This vulnerability is fixed in version 0. 6. 0.
AI Analysis
Technical Summary
The mcp-neo4j-cypher server component, used to execute Cypher queries against Neo4j databases, improperly enforces read_only mode in versions before 0.6.0. Attackers with limited privileges can bypass this restriction by leveraging APOC CALL procedures, potentially performing unauthorized write actions or causing server-side request forgery. The vulnerability is classified under CWE-284 (Improper Access Control). The issue is resolved in mcp-neo4j version 0.6.0.
Potential Impact
Exploitation of this vulnerability could allow an attacker with some privileges to perform unauthorized write operations on the Neo4j database or trigger server-side request forgery. However, the overall impact is considered low severity, reflecting limited exploitability and impact scope.
Mitigation Recommendations
Upgrade mcp-neo4j to version 0.6.0 or later, where this vulnerability is fixed. Since no official patch links or vendor advisories are provided, verify the upgrade from the official neo4j-contrib sources. No alternative mitigations are indicated.
CVE-2026-35402: CWE-284: Improper Access Control in neo4j-contrib mcp-neo4j
Description
CVE-2026-35402 is a low-severity vulnerability in the mcp-neo4j component of neo4j-contrib, affecting versions prior to 0. 6. 0. The issue allows bypassing the read_only mode enforcement via APOC CALL procedures, which could enable unauthorized write operations or server-side request forgery. This vulnerability is fixed in version 0. 6. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The mcp-neo4j-cypher server component, used to execute Cypher queries against Neo4j databases, improperly enforces read_only mode in versions before 0.6.0. Attackers with limited privileges can bypass this restriction by leveraging APOC CALL procedures, potentially performing unauthorized write actions or causing server-side request forgery. The vulnerability is classified under CWE-284 (Improper Access Control). The issue is resolved in mcp-neo4j version 0.6.0.
Potential Impact
Exploitation of this vulnerability could allow an attacker with some privileges to perform unauthorized write operations on the Neo4j database or trigger server-side request forgery. However, the overall impact is considered low severity, reflecting limited exploitability and impact scope.
Mitigation Recommendations
Upgrade mcp-neo4j to version 0.6.0 or later, where this vulnerability is fixed. Since no official patch links or vendor advisories are provided, verify the upgrade from the official neo4j-contrib sources. No alternative mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-02T17:03:42.074Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e29db8bdfbbecc598ee1b8
Added to database: 4/17/2026, 8:53:12 PM
Last enriched: 4/17/2026, 9:08:38 PM
Last updated: 4/18/2026, 4:32:16 AM
Views: 9
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.