CVE-2026-49291: CWE-862: Missing Authorization in doobidoo mcp-memory-service
mcp-memory-service is a semantic memory layer for AI applications. Prior to version 10.65.3, the HTTP MCP JSON-RPC endpoint at `/mcp` requires only OAuth `read` scope for all requests, then dispatches `tools/call` directly to handlers that include mutating tools. A read-only OAuth client can call `store_memory` and `delete_memory` through MCP even though the corresponding REST endpoints require `write` scope. Version 10.65.3 patches the issue.
AI Analysis
Technical Summary
CVE-2026-49291 is a missing authorization vulnerability (CWE-862) in doobidoo's mcp-memory-service. Before version 10.65.3, the /mcp JSON-RPC endpoint requires only OAuth read scope for all requests but dispatches calls to mutating handlers like store_memory and delete_memory. These operations should require OAuth write scope, but the insufficient authorization allows read-only clients to perform write operations. The vulnerability is fixed in version 10.65.3.
Potential Impact
An attacker with OAuth read scope can perform unauthorized write operations such as storing or deleting memory via the MCP JSON-RPC endpoint. This leads to integrity and availability impacts on the semantic memory layer, potentially disrupting AI application behavior. Confidentiality is not impacted.
Mitigation Recommendations
Upgrade to version 10.65.3 or later, where the authorization checks are corrected to require write scope for mutating operations. No other mitigation is indicated. Patch status is not explicitly confirmed but the description states version 10.65.3 patches the issue.
CVE-2026-49291: CWE-862: Missing Authorization in doobidoo mcp-memory-service
Description
mcp-memory-service is a semantic memory layer for AI applications. Prior to version 10.65.3, the HTTP MCP JSON-RPC endpoint at `/mcp` requires only OAuth `read` scope for all requests, then dispatches `tools/call` directly to handlers that include mutating tools. A read-only OAuth client can call `store_memory` and `delete_memory` through MCP even though the corresponding REST endpoints require `write` scope. Version 10.65.3 patches the issue.
CVSS v3.1
Score 8.1high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49291 is a missing authorization vulnerability (CWE-862) in doobidoo's mcp-memory-service. Before version 10.65.3, the /mcp JSON-RPC endpoint requires only OAuth read scope for all requests but dispatches calls to mutating handlers like store_memory and delete_memory. These operations should require OAuth write scope, but the insufficient authorization allows read-only clients to perform write operations. The vulnerability is fixed in version 10.65.3.
Potential Impact
An attacker with OAuth read scope can perform unauthorized write operations such as storing or deleting memory via the MCP JSON-RPC endpoint. This leads to integrity and availability impacts on the semantic memory layer, potentially disrupting AI application behavior. Confidentiality is not impacted.
Mitigation Recommendations
Upgrade to version 10.65.3 or later, where the authorization checks are corrected to require write scope for mutating operations. No other mitigation is indicated. Patch status is not explicitly confirmed but the description states version 10.65.3 patches the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-28T20:07:58.862Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a358c5cf198dc38c1f2fbb0
Added to database: 06/19/2026, 18:37:16 UTC
Last enriched: 06/26/2026, 19:20:09 UTC
Last updated: 08/03/2026, 19:18:00 UTC
Views: 125
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