Weakness (CWE)
CWE-942: Permissive Cross-domain Security Policy with Untrusted Domains
The product uses a web-client protection
mechanism such as a Content Security Policy (CSP) or
cross-domain policy file, but the policy includes untrusted
domains with which the web client is allowed to
communicate.
How to prevent it (3 mitigations)
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Architecture and Design, Operation
Define a restrictive Content Security Policy [REF-1486] or cross-domain policy file.
-
Architecture and Design, Operation
Avoid using wildcards in the CSP / cross-domain policy file. Any domain matching the wildcard expression will be implicitly trusted, and can perform two-way interaction with the target server.
-
Architecture and Design, Operation
For Flash, modify crossdomain.xml to use meta-policy options such as 'master-only' or 'none' to reduce the possibility of an attacker planting extraneous cross-domain policy files on a server.
Source: MITRE CWE-942
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Medium 4.3CVE-2026-85313 Public exploit
Apache Camel: Camel-Jetty Cross-Origin Credential Exposure via Allow-All CrossOriginFilter Defaults When enableCORS Is Set
Permissive Cross-domain Policy with Untrusted Domains vulnerability in Apache Camel Jetty component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. Setting enableCORS on a Jetty endpoint installed Jetty's CrossOriginFilt…
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Medium 6.5CVE-2026-84176 Public exploit
Apache Camel: Camel-Platform-HTTP-Vertx Cross-Origin Credential Exposure via Wildcard Origin Reflection
Permissive Cross-domain Policy with Untrusted Domains vulnerability in Apache Camel Platform HTTP Vertx component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. createCorsHandler() set Access-Control-Allow-Credentials: …
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Critical 10.0CVE-2026-59726 Public exploit
Ruflo: Unauthenticated RCE in MCP bridge default docker-compose deployment
Ruflo is an agent meta-harness for Claude Code and Codex. Prior to 3.16.3, ruflo's default docker-compose deployment exposed the MCP bridge POST /mcp and POST /mcp/:group endpoints without authentication, allowing an unauthenticated network attacker to invoke…
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Medium 5.9CVE-2026-34227 Public exploit
Sliver One-Click Remote Access: Insecure CORS & Unauthenticated MCP Interface
Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to version 1.7.4, a single click on a malicious link gives an unauthenticated attacker immediate, silent control over every active C2 session or beacon, capable of exfiltra…
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High 7.7CVE-2026-34200 Public exploit
Nhost CLI MCP Server: Missing Inbound Authentication on Explicitly Bound Network Port
Nhost is an open source Firebase alternative with GraphQL. Prior to version 1.41.0, The Nhost CLI MCP server, when explicitly configured to listen on a network port, applies no inbound authentication and does not enforce strict CORS. This allows a malicious w…
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High 7.4CVE-2026-27579 Public exploit
CollabPlatform : CORS Misconfiguration Allows Arbitrary Origin With Credentials Leading to Authenticated Account Data Exposure
CollabPlatform is a full-stack, real-time doc collaboration platform. In all versions of CollabPlatform, the Appwrite project used by the application is misconfigured to allow arbitrary origins in CORS responses while also permitting credentialed requests. An…
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Medium 6.5CVE-2025-55462 Public exploit
A CORS misconfiguration in Eramba Community and Enterprise Editions v3.26.0 allows an attacker-controlled Origin header…
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High 8.8
OpenCode's Unauthenticated HTTP Server Allows Arbitrary Command Execution
OpenCode is an open source AI coding agent. Prior to 1.0.216, OpenCode automatically starts an unauthenticated HTTP server that allows any local process (or any website via permissive CORS) to execute arbitrary shell commands with the user's privileges. This …