{"api_version":"1","generated_at":"2026-05-29T22:05:47+00:00","cve":"CVE-2026-45366","urls":{"html":"https://cve.report/CVE-2026-45366","api":"https://cve.report/api/cve/CVE-2026-45366.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45366","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45366"},"summary":{"title":"typescript-utcp: SSRF via attacker-controlled OpenAPI servers[0].url in HTTP communication protocol","description":"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. 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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.","Type":"Description","Title":"typescript-utcp: SSRF via attacker-controlled OpenAPI servers[0]"}]}}}