{"id":"CVE-2026-84994","revision":"71e9b12e3a5a4fe39c0294f6a3f6c28f","records":[{"revision":"71e9b12e3a5a4fe39c0294f6a3f6c28f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-84994","aliases":[],"title":"Qwik: Crashing any Qwik Server via Resource thenable","description":"Qwik is a performance-focused JavaScript framework. Prior to @builder.io/qwik 1.20.0 and @qwik.dev/core 2.0.0-beta.37, default server-side qwik-json deserialization causes ResourceSerializer.$fill$ to pass resource._resolved to Promise.resolve without first rejecting attacker-controlled thenables. An unauthenticated request can provide a plain object whose then property is a QRL for an unregistered symbol, causing an orphaned asynchronous rejection that terminates Node.js under its default unhandled-rejection policy. A single request can crash a server, and repeated requests can keep replicas unavailable. This issue is fixed in @builder.io/qwik 1.20.0 and @qwik.dev/core 2.0.0-beta.37.","state":0,"publishedAt":"2026-10-13T19:00:53.742+00:00","modifiedAt":"2026-10-14T16:36:19.123+00:00","affected":[{"ecosystem":"Vendor product","name":"qwik","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"QwikDev\",\n                    \"product\": \"qwik\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.0.0-beta37\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"qwik","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"@builder.io\",\n                    \"product\": \"qwik\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.20.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://github.com/QwikDev/qwik/security/advisories/GHSA-x586-xvc8-g7q6","https://github.com/QwikDev/qwik/pull/8655","https://github.com/QwikDev/qwik/commit/c1e7444402f9592b5cf9096e10bf303ab4640511","https://github.com/QwikDev/qwik/releases/tag/@builder.io/qwik@1.20.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-84994","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-84994","identifiers":["CVE-2026-84994"]},"retained":false,"historicalAffected":[]}],"coverage":[]}