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Tracking
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-cmwv-wf9p-p8wx | genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport |
Tue, 25 Aug 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 25 Aug 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | genieacs-mcp is an MCP server for GenieACS written in Go. Prior to 0.3.2, the Streamable HTTP transport in cmd/server/main.go creates an unauthenticated /mcp listener on the default MCP_LISTEN_ADDR value 127.0.0.1:8080 when MCP_AUTH_TOKEN is unset and the httpSrv.Start(addr) branch does not validate the Host or Origin headers. A malicious website can use DNS rebinding to send browser requests with attacker-controlled Host and Origin values to the loopback listener, initialize an MCP session, list tools, and invoke operations against the GenieACS NBI configured by ACS_URL. Successful exploitation can expose or modify CPE management state, including device reboots, firmware tasks, TR-069 parameter changes, presets, provisions, tags, connection requests, and task operations. The npm wrapper is not affected because it forces TRANSPORT=stdio and does not expose an HTTP listener. This issue is fixed in version 0.3.2. | |
| Title | genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport | |
| Weaknesses | CWE-346 | |
| References |
| |
| Metrics |
cvssV4_0
|
Subscriptions
No data.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-25T18:24:42.746Z
Reserved: 2026-06-16T23:52:12.057Z
Link: CVE-2026-55637
Updated: 2026-08-25T18:24:20.639Z
Status : Received
Published: 2026-08-25T18:17:56.157
Modified: 2026-08-25T19:16:50.917
Link: CVE-2026-55637
No data.
OpenCVE Enrichment
Updated: 2026-08-25T20:45:04Z
Github GHSA