CVE-2026-101060: Server-Side Request Forgery (SSRF) in universal-tool-calling-protocol python-utcp
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.
CVE-2026-101060: Server-Side Request Forgery (SSRF) in universal-tool-calling-protocol python-utcp
Description
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.
CVSS v4.0
Score 8.4high
Affected software
universal-tool-calling-protocol
python-utcp
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-27T16:38:56.428Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab9c996f7a7c54106f51d61
Added to database: 09/28/2026, 01:57:42 UTC
Last updated: 09/28/2026, 01:57:42 UTC
Views: 1
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