CVE-2026-25650: MCP Salesforce Connector Info Disclosure

CVE-2026-25650 Overview

CVE-2026-25650 is an Information Disclosure vulnerability affecting MCP Salesforce Connector, a Model Context Protocol (MCP) server implementation designed for Salesforce integration. Prior to version 0.1.10, arbitrary attribute access in the connector leads to the disclosure of Salesforce authentication tokens, potentially allowing unauthorized access to sensitive Salesforce resources.

Critical Impact
Unauthenticated attackers can exploit arbitrary attribute access to extract Salesforce authentication tokens, compromising connected Salesforce environments and potentially exposing sensitive business data.

Affected Products

MCP Salesforce Connector versions prior to 0.1.10
Salesforce integrations utilizing vulnerable MCP-Salesforce implementations
Systems with MCP server deployments connected to Salesforce APIs

Discovery Timeline

2026-02-06 - CVE-2026-25650 published to NVD
2026-02-06 - Last updated in NVD database

Technical Details for CVE-2026-25650

Vulnerability Analysis

This vulnerability falls under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The MCP Salesforce Connector fails to properly restrict attribute access, allowing attackers to query arbitrary attributes through the connector interface. This design flaw enables the extraction of Salesforce authentication tokens that should remain protected from unauthorized access.

The vulnerability can be exploited remotely without requiring authentication or user interaction. An attacker with network access to a vulnerable MCP Salesforce Connector deployment can leverage the arbitrary attribute access functionality to retrieve stored authentication credentials, including OAuth tokens and API keys used for Salesforce integration.

Root Cause

The root cause stems from insufficient access controls on attribute retrieval functionality within the MCP Salesforce Connector. The connector exposes internal attributes, including sensitive authentication credentials, through its API interface without proper validation or restriction. This allows any requester to enumerate and extract protected configuration data, including the Salesforce authentication tokens necessary for API communication.

Attack Vector

The attack is network-based and requires no authentication or privileges. An attacker can exploit this vulnerability by sending crafted requests to the MCP server interface that query arbitrary attributes. Since the connector does not validate or restrict which attributes can be accessed, authentication tokens stored within the connector's configuration become accessible to unauthorized parties.

The exploitation mechanism involves querying the MCP server's attribute access functionality to retrieve sensitive configuration values. Once an attacker obtains the Salesforce authentication token, they can impersonate the legitimate integration to access, modify, or exfiltrate data from the connected Salesforce organization.

Detection Methods for CVE-2026-25650

Indicators of Compromise

Unusual attribute access requests targeting authentication or credential-related configuration values in MCP server logs
Unexpected API calls to Salesforce using tokens associated with MCP integrations from unrecognized IP addresses
Audit log entries showing Salesforce access patterns inconsistent with normal integration behavior
Multiple failed or successful authentication attempts from the MCP connector's service account originating from unexpected sources

Detection Strategies

Monitor MCP server logs for requests attempting to access sensitive configuration attributes outside normal operational patterns
Implement network traffic analysis to detect unexpected connections to MCP server endpoints from untrusted sources
Enable Salesforce Shield Event Monitoring to track API access using integration credentials and identify anomalous activity
Deploy runtime application self-protection (RASP) solutions to detect attribute enumeration attempts

Monitoring Recommendations

Configure alerting for any Salesforce API access using MCP integration credentials from IP addresses not in the approved allowlist
Establish baseline behavior for MCP Salesforce Connector attribute access patterns and alert on deviations
Monitor for token usage patterns that indicate credential theft, such as concurrent usage from geographically distant locations
Implement logging for all attribute access requests to the MCP server for forensic analysis

How to Mitigate CVE-2026-25650

Immediate Actions Required

Upgrade MCP Salesforce Connector to version 0.1.10 or later immediately
Rotate all Salesforce authentication tokens and OAuth credentials used by the connector
Review Salesforce audit logs for unauthorized access during the exposure window
Restrict network access to MCP server endpoints to trusted IP ranges only

Patch Information

The vulnerability has been addressed in MCP Salesforce Connector version 0.1.10. The fix implements proper access controls to prevent unauthorized attribute enumeration and protects sensitive authentication credentials from disclosure.

Patching resources:

Workarounds

Implement network segmentation to restrict MCP server access to authorized systems only until patching is complete
Deploy a web application firewall (WAF) or API gateway to filter requests attempting to access sensitive attributes
Temporarily disable the MCP Salesforce Connector if the integration is not business-critical until the upgrade can be performed
Implement IP allowlisting at the Salesforce organization level to restrict API access to known MCP server addresses

bash

# Example: Restrict network access to MCP server (firewall rule)
# Allow only trusted internal networks to reach MCP server port
iptables -A INPUT -p tcp --dport 3000 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 3000 -j DROP