{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-129094","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-13T15:18:30.244Z","datePublished":"2026-11-13T15:19:40.767Z","dateUpdated":"2026-11-13T15:19:40.767Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-13T15:19:40.767Z"},"datePublic":"2026-10-25T00:00:00.000Z","title":"@utcp/http before 1.1.14 SSRF to Loopback via Host Placeholder in Call Templates","descriptions":[{"lang":"en","value":"@utcp/http before 1.1.14 contains a server-side request forgery vulnerability that allows remote manuals to reach loopback services by bypassing the remote-loopback check with a {host} placeholder. Attackers can supply host arguments like 127.0.0.1 or register tools via Streamable HTTP and SSE discovery to access internal services on the agent machine."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Server-Side Request Forgery (SSRF)","cweId":"CWE-918","type":"CWE"}]}],"affected":[{"vendor":"universal-tool-calling-protocol","product":"@utcp/http","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"1.1.14"}],"packageURL":"pkg:npm/%40utcp/http","collectionURL":"https://www.npmjs.com/package/@utcp/http","repo":"https://github.com/universal-tool-calling-protocol/typescript-utcp"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":2.3,"baseSeverity":"LOW"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.7,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/universal-tool-calling-protocol/typescript-utcp/pull/58","tags":["patch","issue-tracking"]},{"url":"https://github.com/universal-tool-calling-protocol/typescript-utcp/pull/60","tags":["patch","issue-tracking"]},{"url":"https://github.com/universal-tool-calling-protocol/typescript-utcp/security/advisories/GHSA-r8j5-8747-88cm","tags":["related","vendor-advisory"],"name":"GitHub Security Advisory (GHSA-r8j5-8747-88cm)"},{"url":"https://www.npmjs.com/package/@utcp/http","tags":["product"]},{"name":"VulnCheck Advisory: @utcp/http before 1.1.14 SSRF to Loopback via Host Placeholder in Call Templates","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/utcp-http-before-1.1.14-ssrf-to-loopback-via-host-placeholder-in-call-templates"}],"credits":[{"lang":"en","value":"Zachariah Mithani (AploSec)","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}