{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63184","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-15T22:13:00.721Z","datePublished":"2026-10-30T21:49:06.793Z","dateUpdated":"2026-10-30T21:49:06.793Z"},"containers":{"cna":{"title":"Refitter: Unrestricted OpenAPI references permit build-host SSRF and file inclusion","problemTypes":[{"descriptions":[{"cweId":"CWE-829","lang":"en","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/christianhelle/refitter/security/advisories/GHSA-x6w4-f264-3vvr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/christianhelle/refitter/security/advisories/GHSA-x6w4-f264-3vvr"},{"name":"https://github.com/christianhelle/refitter/pull/1173","tags":["x_refsource_MISC"],"url":"https://github.com/christianhelle/refitter/pull/1173"},{"name":"https://github.com/christianhelle/refitter/commit/6ad20a3803561225100b0a4bb6b12f947d23db7b","tags":["x_refsource_MISC"],"url":"https://github.com/christianhelle/refitter/commit/6ad20a3803561225100b0a4bb6b12f947d23db7b"},{"name":"https://github.com/christianhelle/refitter/releases/tag/2.1.1","tags":["x_refsource_MISC"],"url":"https://github.com/christianhelle/refitter/releases/tag/2.1.1"},{"name":"https://github.com/user-attachments/files/29395269/reproduce.sh","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395269/reproduce.sh"},{"name":"https://github.com/user-attachments/files/29395271/maintainer-report.txt","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395271/maintainer-report.txt"},{"name":"https://github.com/user-attachments/files/29395272/advisory.md","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395272/advisory.md"},{"name":"https://github.com/user-attachments/files/29395283/reproduce.sh","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395283/reproduce.sh"},{"name":"https://github.com/user-attachments/files/29395284/maintainer-report.txt","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395284/maintainer-report.txt"},{"name":"https://github.com/user-attachments/files/29395285/advisory.md","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395285/advisory.md"},{"name":"https://github.com/user-attachments/files/29395286/listener.py","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395286/listener.py"},{"name":"https://github.com/user-attachments/files/29395288/make_spec.py","tags":["x_refsource_MISC"],"url":"https://github.com/user-attachments/files/29395288/make_spec.py"}],"affected":[{"vendor":"christianhelle","product":"refitter","versions":[{"version":"< 2.1.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-30T21:49:06.793Z"},"descriptions":[{"lang":"en","value":"Refitter is a tool for generating a C# REST API client using the Refit library. Prior to 2.1.1, the `refitter` dotnet tool invokes `NJsonSchema` with unsafe defaults for `$ref` resolution when generating Refit interfaces and contracts from attacker-controlled or attacker-influenced OpenAPI descriptions. Remote `http(s)` references cause requests from the developer or CI host and inline untrusted remote schema content into generated output. Absolute local file paths and relative `../` traversal outside the input directory also resolve and inline local content, permitting arbitrary local-file disclosure. The demonstrated chain stops at server-side request forgery, remote file inclusion, and local file inclusion, not code execution: Refit sets the base URL at runtime, enum values use verbatim-string doubling, and string defaults are escaped. This issue is fixed in version 2.1.1."}],"source":{"advisory":"GHSA-x6w4-f264-3vvr","discovery":"UNKNOWN"}}}}