{"cve":"CVE-2026-100349","nvd":{"published":"2026-10-15T16:17:30.640","modified":"2026-10-16T18:17:10.350","status":"Deferred","description":"kin-openapi is a Go project for handling OpenAPI files. Prior to 0.146.0, openapi3filter.ValidateResponse passes a nil response header schema to decodeValue when an OpenAPI document declares the header with content instead of schema. The document passes validation, but every response validation for the affected operation dereferences the nil schema and panics even when the response does not contain the declared header. Applications that ingest an untrusted specification can expose this as remote availability impact, while applications using only trusted local specifications still crash when the affected operation is exercised. This issue is fixed in version 0.146.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2},"cvss_v3":null,"cwes":["CWE-476"],"references":["https://github.com/getkin/kin-openapi/commit/f5441d67f855ed34d975b3b85665764644ab1459","https://github.com/getkin/kin-openapi/releases/tag/v0.146.0","https://github.com/getkin/kin-openapi/security/advisories/GHSA-74vm-87hj-r66f"],"products":[],"source":"nvd","synced_at":"2026-10-19T23:00:53.604569364+00:00"},"epss":{"cve":"CVE-2026-100349","score":0.00372,"percentile":0.30825,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-74vm-87hj-r66f","url":"https://osv.dev/vulnerability/GHSA-74vm-87hj-r66f","summary":"kin-openapi openapi3filter: nil-pointer panic in ValidateResponse on a response header declared with content","modified":"2026-10-16T20:15:03.610490637Z","packages":[{"ecosystem":"Go","name":"github.com/getkin/kin-openapi","purl":"pkg:golang/github.com/getkin/kin-openapi","ranges":["<0.146.0"],"fixed":["0.146.0"]}]}],"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."]}