CVE-2026-101059

utcp-http before 1.1.4 fails to validate the OAuth2 tokenUrl field from remote OpenAPI specifications, allowing attackers to redirect credential submission to arbitrary endpoints. When a victim registers an attacker-controlled OpenAPI spec and invokes a generated OAuth2-protected tool, the librar...

CVE-2026-101060

python-utcp versions before 1.1.4 contain a server-side request forgery vulnerability in HttpCommunicationProtocol.calltool 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...

EUVD-2026-87986

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 plugi...

CVE-2026-101061

The utcp-gql and utcp-websocket libraries, in versions before 1.1.1 , are vulnerable to server-side request forgery (SSRF) . The vulnerability stems from an incomplete application of fixes for CVE-2026-44661. Specifically, the GraphQL plugin utilizes a flawed prefix check that allows bypasses usi...

CVE-2026-101060 python-utcp before 1.1.4 SSRF via unvalidated HTTP redirects

python-utcp versions before 1.1.4 contain a server-side request forgery vulnerability in HttpCommunicationProtocol.calltool 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...

CVE-2026-101059 utcp-http before 1.1.4 OAuth2 tokenUrl Trust Boundary Bypass

utcp-http before 1.1.4 fails to validate the OAuth2 tokenUrl field from remote OpenAPI specifications, allowing attackers to redirect credential submission to arbitrary endpoints. When a victim registers an attacker-controlled OpenAPI spec and invokes a generated OAuth2-protected tool, the librar...

EUVD-2026-87984

utcp-http before 1.1.4 fails to validate the OAuth2 tokenUrl field from remote OpenAPI specifications, allowing attackers to redirect credential submission to arbitrary endpoints. When a victim registers an attacker-controlled OpenAPI spec and invokes a generated OAuth2-protected tool, the librar...

EUVD-2026-87985

python-utcp versions before 1.1.4 contain a server-side request forgery vulnerability in HttpCommunicationProtocol.calltool 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...

CVE-2026-101060

Versions of python-utcp before 1.1.4 are vulnerable to a Server-Side Request Forgery (SSRF) in the HttpCommunicationProtocol.call_tool function. The root cause is that the application validates the initial tool URL but fails to re-validate the target during HTTP redirects . An attacker controllin...

CVE-2026-101059

The utcp-http library, in versions before 1.1.4 , is vulnerable to a Trust Boundary Bypass involving the OAuth2 tokenUrl field. The library fails to validate this field when it is sourced from remote OpenAPI specifications . An attacker can exploit this by providing a malicious OpenAPI specificat...

CVE-2026-101058

The python-utcp (pip package utcp-http ) version before 1.1.12 is vulnerable to a Server-Side Request Forgery (SSRF) . The flaw exists because the software fails to verify if tool URLs declared in a hand-written UTCP manual point to the host's loopback interface (127.0.0.1) when the manual is fet...

EUVD-2026-87983

python-utcp pip package utcp-http before 1.1.12 does not verify whether tool URLs declared in a hand-written UTCP manual point at the agent's own loopback interface when that manual is discovered from a remote, non-loopback origin. Because ensuresecureurl intentionally permits loopback HTTP for...

CVE-2026-101057

The utcp-mcp plugin (part of python-utcp ) versions through 1.1.2 is vulnerable to Server-Side Request Forgery (SSRF) . The root cause is a lack of ensure_secure_url validation when connecting to HTTP or WebSocket MCP server URLs provided in a call template's mcpServers configuration. This bypass...

EUVD-2026-87982

utcp-mcp the MCP plugin of python-utcp through 1.1.2 connects to the HTTP and WebSocket MCP server URLs given in a call template's mcpServers configuration without the ensuresecureurl validation that the HTTP-family plugins apply, so the HTTPS/WSS-or-loopback rule is not enforced. A call template...

CVE-2026-101058: Server-Side Request Forgery (SSRF)

python-utcp pip package utcp-http before 1.1.12 does not verify whether tool URLs declared in a hand-written UTCP manual point at the agent's own loopback interface when that manual is discovered from a remote, non-loopback origin. Because ensuresecureurl intentionally permits loopback HTTP for...

CVE-2026-101057: Cleartext Transmission of Sensitive Information

utcp-mcp the MCP plugin of python-utcp through 1.1.2 connects to the HTTP and WebSocket MCP server URLs given in a call template's mcpServers configuration without the ensuresecureurl validation that the HTTP-family plugins apply, so the HTTPS/WSS-or-loopback rule is not enforced. A call template...

CVE-2026-101059: Server-Side Request Forgery (SSRF)

utcp-http before 1.1.4 fails to validate the OAuth2 tokenUrl field from remote OpenAPI specifications, allowing attackers to redirect credential submission to arbitrary endpoints. When a victim registers an attacker-controlled OpenAPI spec and invokes a generated OAuth2-protected tool, the librar...

CVE-2026-101060: Server-Side Request Forgery (SSRF)

python-utcp versions before 1.1.4 contain a server-side request forgery vulnerability in HttpCommunicationProtocol.calltool 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...

CVE-2026-101061: Server-Side Request Forgery (SSRF)

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 plugi...

utcp-gql SSRF: CVE-2026-44661 fix not applied to the GraphQL and WebSocket plugins

SummaryThe fix for CVE-2026-44661 commit 5b16e43 added the ensuresecureurl / issecureurl helpers and wired them into the three HTTP-family plugins, but it did not reach the GraphQL or WebSocket plugins. The GraphQL plugin utcp-gql still uses the startswith prefix check that the fix explicitly...