{"id":"DEBIAN-CVE-2026-73502","details":"kin-openapi is a Go project for handling OpenAPI files. From 0.2.0 until 0.144.0, openapi3filter.ValidateRequest can encounter a NULL-pointer-dereference denial of service when an operation declares a content parameter whose application/json media type has no schema. In openapi3filter/req_resp_decoder.go, the default defaultContentParameterDecoder dereferences mt.Schema.Value without checking whether mt.Schema is nil, even though doc.Validate() accepts the document under OpenAPI 3.0.x and 3.1.x. A single unauthenticated request supplying the parameter value can panic request validation, causing an aborted request with log growth in the common synchronous net/http path or a full process crash in integrations without recovery. This issue is fixed in version 0.144.0.","modified":"2026-09-19T22:47:28.080641418Z","published":"2026-08-18T18:19:33.460Z","upstream":["CVE-2026-73502"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-73502"}],"affected":[{"package":{"name":"golang-github-getkin-kin-openapi","ecosystem":"Debian:12","purl":"pkg:deb/debian/golang-github-getkin-kin-openapi?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.110.0-1","0.117.0-1","0.118.0-1","0.120.0-1","0.122.0-1","0.122.0-2","0.122.0-3","0.123.0-1","0.124.0-1","0.135.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73502.json"}},{"package":{"name":"golang-github-getkin-kin-openapi","ecosystem":"Debian:13","purl":"pkg:deb/debian/golang-github-getkin-kin-openapi?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.124.0-1","0.135.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73502.json"}},{"package":{"name":"golang-github-getkin-kin-openapi","ecosystem":"Debian:14","purl":"pkg:deb/debian/golang-github-getkin-kin-openapi?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.124.0-1","0.135.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73502.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}