{"cve":"CVE-2026-100347","nvd":{"published":"2026-10-15T16:17:30.287","modified":"2026-10-15T17:17:07.413","status":"Deferred","description":"kin-openapi is a Go project for handling OpenAPI files. Prior to 0.145.0, openapi3filter.ValidationHandler uses the routers/legacy router, which passes an unsupported or non-canonical HTTP method for an existing static path to openapi3.PathItem.GetOperation. The default branch of GetOperation panics before authentication runs, so an unauthenticated remote client can repeatedly send methods such as PROPFIND or lowercase get to abort connections and generate stack-trace log growth. The specific panic requires an exact static path; a concrete path matched only by a templated route does not reach the same sink. This issue is fixed in version 0.145.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-20","CWE-248"],"references":["https://github.com/getkin/kin-openapi/commit/f1a5b523b82868d2d9be2e116b4e942892be72c3","https://github.com/getkin/kin-openapi/releases/tag/v0.145.0","https://github.com/getkin/kin-openapi/security/advisories/GHSA-fh4f-47mf-f2gj","https://github.com/getkin/kin-openapi/security/advisories/GHSA-fh4f-47mf-f2gj"],"products":[],"source":"nvd","synced_at":"2026-10-19T23:00:53.604569364+00:00"},"epss":{"cve":"CVE-2026-100347","score":0.00515,"percentile":0.43573,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-fh4f-47mf-f2gj","url":"https://osv.dev/vulnerability/GHSA-fh4f-47mf-f2gj","summary":"kin-openapi: Unauthenticated panic (DoS) in openapi3filter legacy router via non-canonical/unsupported HTTP method on a static path","modified":"2026-10-15T20:30:11.858476899Z","packages":[{"ecosystem":"Go","name":"github.com/getkin/kin-openapi","purl":"pkg:golang/github.com/getkin/kin-openapi","ranges":["<0.145.0"],"fixed":["0.145.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}