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Weakness (CWE)

CWE-940: Improper Verification of Source of a Communication Channel

Base Incomplete

The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.

How to prevent it (1 mitigation)

  1. Architecture and Design

    Use a mechanism that can validate the identity of the source, such as a certificate, and validate the integrity of data to ensure that it cannot be modified in transit using an Adversary-in-the-Middle (AITM) attack.

    When designing functionality of actions in the URL scheme, consider whether the action should be accessible to all mobile applications, or if an allowlist of applications to interface with is appropriate.

Source: MITRE CWE-940

All Critical High Medium Low Exploited only Public exploit

6 results · Clear filters · Feed

  • Low 3.1
    CVE-2026-76894

    CKAN MCP Server: DataStore Table UI resource does not validate postMessage origin (in) and posts to targetOrigin "*" (out)

    CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the DataStore table UI in src/resources/datastore-table-ui.ts accepts window message events without validating event.origin and sends JSON-RPC messages through postMessage with a…

    ondata ckan-mcp-server @aborruso/ckan-mcp-server npm
  • Low 3.7
    CVE-2026-2967

    Cesanta Mongoose TCP Sequence Number net_builtin.c getpeer verification of source

    A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communicat…

    cesanta mongoose swupdate opencpn Debian Ubuntu
  • Low 3.8
    CVE-2025-62439

    An Improper Verification of Source of a Communication Channel vulnerability [CWE-940] vulnerability in Fortinet FortiOS…

    Fortinet FortiOS Network devices
  • Low 3.5
    CVE-2025-42978

    Insufficiently Secure Hostname Verification for Outbound TLS Connections in SAP NetWeaver Application Server Java

    The widely used component that establishes outbound TLS connections in SAP NetWeaver Application Server Java does not reliably match the hostname that is used for the connection against the wildcard hostname defined in the received certificate of remote TLS s…

    SAP_SE SAP NetWeaver Application Server Java
  • Low 3.2
    CVE-2025-0036

    In AMD Versal Adaptive SoC devices, the incorrect configuration of the SSS during runtime (post-boot) cryptographic ope…

    AMD Versal™ Adaptive SoC Devices Versal™ AI Edge Series Versal™ Premium Series Browsers
  • Low 3.5
    CVE-2024-36506

    An improper verification of source of a communication channel vulnerability [CWE-940] in FortiClientEMS 7.4.0, 7.2.0 th…

    Fortinet FortiClientEMS Network devices