CVE-2026-101061: Server-Side Request Forgery (SSRF) in universal-tool-calling-protocol python-utcp
utcp-gql before 1.1.1 and utcp-websocket before 1.1.1 contain server-side request forgery vulnerabilities due to incomplete application of CVE-2026-44661 fixes. The GraphQL plugin uses a vulnerable prefix check allowing bypass URLs like http://127.0.0.1.attacker.example, while the WebSocket plugin performs no URL validation despite documented security requirements. Attackers can force connections to internal services and cloud metadata endpoints by supplying malicious tool URLs in call templates, and receive configured API keys and OAuth tokens sent to attacker-controlled hosts.
CVE-2026-101061: Server-Side Request Forgery (SSRF) in universal-tool-calling-protocol python-utcp
Description
utcp-gql before 1.1.1 and utcp-websocket before 1.1.1 contain server-side request forgery vulnerabilities due to incomplete application of CVE-2026-44661 fixes. The GraphQL plugin uses a vulnerable prefix check allowing bypass URLs like http://127.0.0.1.attacker.example, while the WebSocket plugin performs no URL validation despite documented security requirements. Attackers can force connections to internal services and cloud metadata endpoints by supplying malicious tool URLs in call templates, and receive configured API keys and OAuth tokens sent to attacker-controlled hosts.
CVSS v4.0
Score 2.3low
Affected software
universal-tool-calling-protocol
python-utcp
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: 6ab9c996f7a7c54106f51d62
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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