{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-84994","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-09-02T18:12:13.535Z","datePublished":"2026-10-13T19:00:53.742Z","dateUpdated":"2026-10-14T16:36:19.123Z"},"containers":{"cna":{"title":"Qwik: Crashing any Qwik Server via Resource thenable","problemTypes":[{"descriptions":[{"cweId":"CWE-248","lang":"en","description":"CWE-248: Uncaught Exception","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/QwikDev/qwik/security/advisories/GHSA-x586-xvc8-g7q6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/QwikDev/qwik/security/advisories/GHSA-x586-xvc8-g7q6"},{"name":"https://github.com/QwikDev/qwik/pull/8655","tags":["x_refsource_MISC"],"url":"https://github.com/QwikDev/qwik/pull/8655"},{"name":"https://github.com/QwikDev/qwik/commit/c1e7444402f9592b5cf9096e10bf303ab4640511","tags":["x_refsource_MISC"],"url":"https://github.com/QwikDev/qwik/commit/c1e7444402f9592b5cf9096e10bf303ab4640511"},{"name":"https://github.com/QwikDev/qwik/releases/tag/@builder.io/qwik@1.20.0","tags":["x_refsource_MISC"],"url":"https://github.com/QwikDev/qwik/releases/tag/@builder.io/qwik@1.20.0"}],"affected":[{"vendor":"QwikDev","product":"qwik","versions":[{"version":"< 2.0.0-beta37","status":"affected"}]},{"vendor":"@builder.io","product":"qwik","versions":[{"version":"< 1.20.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-13T19:00:53.742Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-x586-xvc8-g7q6","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T16:35:04.214453Z","id":"CVE-2026-84994","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-14T16:36:19.123Z"}}]}}