CVE-2026-101061 LOW

CVE-2026-101061: utcp-gql and utcp-websocket before 1.1.1 SSRF via URL validation bypass

Vendor Universal-Tool-Calling-Protocol
Product python-utcp
Weakness CWE-918 · SSRF
Published September 27, 2026
Last update September 27, 2026

CVSS base score

2.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 27, 2026 CVE published

Related vulnerabilities

04Related CVE