{"id":"CVE-2026-100351","revision":"a07fc90c54c8423088395a27ff015595","records":[{"revision":"a07fc90c54c8423088395a27ff015595","observedAt":"2026-10-25T04:17:26.915+00:00","statement":{"source":"nvd","id":"CVE-2026-100351","aliases":[],"title":"kin-openapi is a Go project for handling OpenAPI files. From 0.144.0 until 0.147.0, openapi3filter.ValidationHandler validates an operation selected from decoded URL.Path while a downstream gorilla/mux router configured with UseEncodedPath …","description":"kin-openapi is a Go project for handling OpenAPI files. From 0.144.0 until 0.147.0, openapi3filter.ValidationHandler validates an operation selected from decoded URL.Path while a downstream gorilla/mux router configured with UseEncodedPath can dispatch a different operation selected from URL.RawPath. When a public exact route and a protected parameterized route use the same method and overlap after decoding, an unauthenticated remote request containing an encoded path separator can be validated as public and then dispatched to the protected handler without invoking the configured AuthenticationFunc. The reachable path parameter is constrained to an encoded representation that decodes to the public literal route, and proxies that canonicalize the URI before forwarding prevent this specific mismatch. This issue is fixed in version 0.147.0.","state":0,"publishedAt":"2026-10-15T16:17:31.11+00:00","modifiedAt":"2026-10-15T17:17:07.52+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4,"severity":"HIGH"}],"references":["https://github.com/getkin/kin-openapi/commit/eda80e2676e9f577ceed2dd80e64f16083edb041","https://github.com/getkin/kin-openapi/releases/tag/v0.147.0","https://github.com/getkin/kin-openapi/security/advisories/GHSA-23vg-4cjm-66q5"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100351","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-289","CWE-436"],"productCriteria":[],"sourceDates":{"published":"2026-10-15T16:17:31.110","lastModified":"2026-10-15T17:17:07.520"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-100351","identifiers":["CVE-2026-100351"]},"retained":false,"historicalAffected":[]}],"coverage":[]}