Process Compose: Browser DNS rebinding lets websites control local process-compose MCP tools
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| F1bonacc1 | process-compose | affected |
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| Vendor | Product | Versions | ||||||||
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| F1bonacc1 | Process-compose |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-5gm3-9crp-6g3v | Process Compose: Browser DNS rebinding lets websites control local process-compose MCP tools |
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.256% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
F1bonacc1
F1bonacc1 process-compose |
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| Vendors & Products |
F1bonacc1
F1bonacc1 process-compose |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | Process Compose is a scheduler and orchestrator for non-containerized applications. Prior to 1.120.0, the MCP SSE listener in src/mcp/server.go accepts browser-origin requests to /sse and the returned message endpoint without validating the Host header, validating the Origin header, or authenticating the caller. When MCP SSE is enabled, a malicious website can use DNS rebinding to reach the loopback listener and issue MCP requests. If expose_control_tools is enabled, the attacker can enumerate process state, read or search logs, truncate logs, and start, stop, restart, or scale local processes; configured user-defined tools can expose additional commands and output. The Gin REST API token middleware does not protect this separately started MCP listener. This issue is fixed in version 1.120.0. | |
| Title | Process Compose: Browser DNS rebinding lets websites control local process-compose MCP tools | |
| Weaknesses | CWE-306 CWE-346 |
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| References |
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| Metrics |
cvssV4_0
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