CVE-2026-101060
python-utcp before 1.1.4 SSRF via unvalidated HTTP redirects
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | universal-tool-calling-protocol |
| Product | python-utcp |
| Published | Sep 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
universal-tool-calling-protocol / python-utcp
0 < 1.1.4
References
Credits
🔍 lexdotdev