CVE-2026-101060
8.4
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
Summary
python-utcp versions before 1.1.4 contain a server-side request forgery vulnerability in HttpCommunicationProtocol.call_tool that validates the initial tool URL but follows HTTP redirects without re-validating the target. Attackers controlling a tool endpoint can return a 302 redirect to internal services, allowing the UTCP client to reach cloud metadata endpoints or internal HTTP services and return their response bodies to the caller.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| universal-tool-calling-protocol | python-utcp | 0 < 1.1.4 | affected |
| universal-tool-calling-protocol | python-utcp | 1.1.4 | unaffected |
Weaknesses
- CWE-918: Server-Side Request Forgery (SSRF)
References
- https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-9qhg-99ww-9mqc
- https://www.vulncheck.com/advisories/python-utcp-before-1.1.4-ssrf-via-unvalidated-http-redirects
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