FreePBX is an open source IP PBX. Prior to 17.0.9, the UCP Node server on ports 8001 and 8003 uses io.use(checkAuth) in node/lib/server.js, but Socket.IO version 4 applies that middleware only to the default namespace. An unauthenticated client can connect to custom namespaces that do not consistently invoke checkAuth in node/lib/auth.js and send crafted event values containing carriage-return or newline characters through the Asterisk Manager Interface action path patched by node/lib/asterisk-manager-patch.js, allowing arbitrary commands to execute as the asterisk service user. This issue is fixed in version 17.0.9.
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Affected Vendors & Products
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Fixes
Solution
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Workaround
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References
History
Thu, 13 Aug 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FreePBX is an open source IP PBX. Prior to 17.0.9, the UCP Node server on ports 8001 and 8003 uses io.use(checkAuth) in node/lib/server.js, but Socket.IO version 4 applies that middleware only to the default namespace. An unauthenticated client can connect to custom namespaces that do not consistently invoke checkAuth in node/lib/auth.js and send crafted event values containing carriage-return or newline characters through the Asterisk Manager Interface action path patched by node/lib/asterisk-manager-patch.js, allowing arbitrary commands to execute as the asterisk service user. This issue is fixed in version 17.0.9. | |
| Title | FreePBX UCP: Unauthenticated remote code execution via socket.io namespace auth bypass and AMI action injection | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV4_0
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-13T21:32:02.059Z
Reserved: 2026-08-13T14:04:09.606Z
Link: CVE-2026-73665
No data.
Status : Received
Published: 2026-08-13T22:17:28.227
Modified: 2026-08-13T22:17:28.227
Link: CVE-2026-73665
No data.
OpenCVE Enrichment
Updated: 2026-08-14T00:45:17Z
Weaknesses