CVE-2026-44661
CVE-2026-44661 · python-utcp: SSRF via attacker-controlled OpenAPI servers[0].url in HTTP communication protocol
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
python-utcp is the python implementation of UTCP. Prior to 1.1.3, the utcp-http plugin is vulnerable to a blind Server-Side Request Forgery (SSRF) caused by a trust-boundary inconsistency between manual discovery and tool invocation. register_manual() validates the discovery URL against an HTTPS / loopback allowlist, but call_tool() and call_tool_streaming() reuse the resolved tool_call_template.url directly without revalidating, and the OpenAPI converter blindly trusts whatever servers[0].url an attacker-hosted spec declares. An attacker who hosts a malicious OpenAPI spec on a legitimate HTTPS endpoint can declare e.g. servers: [{ url: "http://127.0.0.1:9090" }] or servers: [{ url: "http://169.254.169.254" }]; the OpenAPI converter then produces tools whose URL points at internal services on the agent host. All three HTTP-class protocols (utcp_http.http, utcp_http.streamable_http, utcp_http.sse) shared the same gap. This vulnerability is fixed in 1.1.3.
CVSS 4.7 · Media · EPSS 0,2% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: python
Productos y versiones afectados
python-utcp
- Versiones
- < 1.1.2: Afectada
Sin corrección publicada
utcp-http PyPI
- Versiones
- 1.0.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.1.0
- 1.1.1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.1.2
Actualiza a 1.1.2