CVE-2026-45366: universal-tool-calling-protocol typescript-utcp, SSRF

Описание

Оригинално описание

typescript-utcp is a typescript implementation of UTCP. Prior to 1.1.2, the @utcp/http package is vulnerable to a blind Server-Side Request Forgery (SSRF) caused by a trust-boundary inconsistency between manual discovery and tool invocation. registerManual() validates the discovery URL against an HTTPS / loopback allowlist, but callTool() reuses the resolved toolCallTemplate.url directly without revalidating, and the OpenApiConverter 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 converter then produces tools whose URL points at internal services on the agent host. This vulnerability is fixed in 1.1.2.

Засегнати продукти

• universal-tool-calling-protocol typescript-utcp: < 1.1.2

Вид слабост

• CWE-918 Server-Side Request Forgery

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-45366
• https://nvd.nist.gov/vuln/detail/CVE-2026-45366
• https://github.com/universal-tool-calling-protocol/typescript-utcp/security/advisories/GHSA-r8j5-8747-88cm