Server-side Request Forgery (SSRF) Affecting utcp-http package, versions [,1.1.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-UTCPHTTP-16635442
- published11 May 2026
- disclosed7 May 2026
- creditUnknown
Introduced: 7 May 2026
NewCVE-2026-44661 (opens in a new tab)How to fix?
Upgrade utcp-http to version 1.1.3 or higher.
Overview
utcp-http is an UTCP communication protocol plugin for HTTP, SSE, and streamable HTTP, plus an OpenAPI converter.
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the call_tool and call_tool_streaming functions when attacker-controlled URLs from OpenAPI server specifications are not properly validated. An attacker can access internal network resources and sensitive cloud metadata by supplying a malicious OpenAPI specification that references internal or restricted endpoints.
Workaround
This vulnerability can be mitigated by refusing to call register_manual with any URL controlled by an untrusted party, even over HTTPS, and by restricting outbound network access from the host running the agent so internal addresses are unreachable.