Description

Insertion of Sensitive Information Into Sent Data vulnerability in farvisun Mindio Magic MCP mindio-magic-mcp allows Retrieve Embedded Sensitive Data.This issue affects Mindio Magic MCP: from n/a through 0.5.6.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "4.3",
  "pubDate": "2026-10-04T16:16:28.587Z",
  "pubdate": "2026-10-04T16:16:28.587Z",
  "executiveSummary": "Mindio Magic MCP is susceptible to an Insertion of Sensitive Information Into Sent Data vulnerability, categorized under CWE-200, which leads to the unauthorized retrieval of embedded sensitive information.\nThis vulnerability impacts all versions of Mindio Magic MCP from n/a through 0.5.6, exposing the application to potential security breaches regarding internal data handling.\nThe flaw allows unauthorized actors or processes to intercept or access sensitive data that is improperly included within data transmissions or outputs generated by the product.\nThe risk implication is significant as it facilitates the leakage of credentials, tokens, or internal configuration details, potentially leading to unauthorized system access or further lateral movement within the environment.\nExploitation does not necessarily require complex prerequisites if the sensitive information is consistently embedded within the outgoing data stream, effectively allowing an observer to extract secrets without needing specific high-level privileges.\nOrganizations utilizing versions 0.5.6 and below are at risk of data exfiltration and should prioritize containment strategies to prevent the transmission of critical secrets through the vulnerable components.",
  "technicalDetails": "The vulnerability resides within the data handling routines of Mindio Magic MCP, specifically where sensitive information is processed and subsequently transmitted or serialized into data streams. The root cause is the improper inclusion of sensitive, non-public data (such as API keys, tokens, or system identifiers) into outgoing message bodies or transmission packets.\nIn the context of the Mindio Magic MCP architecture, the product fails to sanitize or scrub sensitive fields before broadcasting or sending data to external interfaces or logs. This results in the exposure of embedded sensitive data to any entity capable of monitoring the communication channel or intercepting the output payload.\nThe attack flow initiates when the application processes a request or triggers an internal function that necessitates data transmission. During the assembly of the outgoing packet, the software incorrectly bundles sensitive internal configuration variables along with the expected application data. Because these sensitive elements are not treated as restricted or transient, they are persisted within the sent data.\nAn attacker can exploit this by monitoring the application's output streams or by analyzing the data sent by the MCP (Model Context Protocol) component. By inspecting the serialized data, the attacker can extract embedded secrets. Given the nature of MCP, which is designed to allow LLMs to interact with external tools and systems, the leakage of sensitive data could provide an attacker with the ability to impersonate the application or gain unauthorized control over connected systems.\nThe vulnerability is present in versions up to 0.5.6. The exploitation process is passive; it requires no interaction from the user, as the leakage occurs during the normal operational execution of the software's data transmission mechanisms. There is no specific authentication requirement for the attacker to view the output if the transmission channel is not encrypted or if the attacker has gained access to the logging infrastructure where this data is captured. Post-exploitation impact includes the total compromise of confidentiality for the credentials contained within the leaked data, potentially enabling further exploitation of backend services, database access, or integrated APIs that rely on the leaked tokens."
}