{"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": "2026-10-13T19:00:53.742Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "qwik", "vendor": "QwikDev", "versions": [{"status": "affected", "version": "< 2.0.0-beta37"}]}, {"product": "qwik", "vendor": "@builder.io", "versions": [{"status": "affected", "version": "< 1.20.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-84994", "lastModified": "2026-10-13T19:27:44.137", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-13T19:20:52.743", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/QwikDev/qwik/commit/c1e7444402f9592b5cf9096e10bf303ab4640511"}, {"source": "security-advisories@github.com", "url": "https://github.com/QwikDev/qwik/pull/8655"}, {"source": "security-advisories@github.com", "url": "https://github.com/QwikDev/qwik/releases/tag/@builder.io/qwik@1.20.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/QwikDev/qwik/security/advisories/GHSA-x586-xvc8-g7q6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-248"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}