{"id":"EUVD-2026-99978","revision":"706098e2e9c7472597924fac5ca656a5","records":[{"revision":"706098e2e9c7472597924fac5ca656a5","observedAt":"2026-10-30T12:50:55.038+00:00","statement":{"source":"euvd","id":"EUVD-2026-99978","aliases":["CVE-2026-84994","GHSA-x586-xvc8-g7q6"],"title":"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.reso…","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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD 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":null}],"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://euvd.enisa.europa.eu/vulnerability/EUVD-2026-99978","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 13, 2026, 7:00:53 PM","dateUpdated":"Oct 14, 2026, 4:36:19 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-99978","identifiers":["EUVD-2026-99978","CVE-2026-84994","GHSA-x586-xvc8-g7q6"]},"retained":false,"historicalAffected":[]}],"coverage":[]}