EUVD-2026-99978

Qwik: Crashing any Qwik Server via Resource thenable...

@qwikui-org/ui (>=0.2.2, <=0.2.3), @react-portable/core (>=0.4.0, <=0.11.2) +1 more potentially affected by CVE-2026-84994 via @builder.io/qwik (>=1.2.6, <=1.4.5)

@builder.io/qwik NPM version =1.2.6, =0.2.2, =0.4.0, =0.11.2 - not-qwik-library-test1 0.0.3 Source cves: CVE-2026-84994 Source advisory: GHSA-X586-XVC8-G7Q6...

@qwikui-org/ui (>=0.2.2, <=0.2.3), @react-portable/core (>=0.4.0, <=0.11.2) +1 more potentially affected by CVE-2026-84994 via @builder.io/qwik (>=1.2.6, <=1.4.5)

@builder.io/qwik NPM version =1.2.6, =0.2.2, =0.4.0, =0.11.2 - not-qwik-library-test1 0.0.3 Source cves: CVE-2026-84994 Source advisory: OSV:GHSA-X586-XVC8-G7Q6...

CVE-2026-84994

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...

CVE-2026-84994

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...

CVE-2026-84994: Uncaught Exception

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...

PT-2026-112710

Name of the Vulnerable Software and Affected Versions @builder.io/qwik versions prior to 1.20.0 @qwik.dev/core versions prior to 2.0.0-beta.37 Description Default server-side qwik-json deserialization allows an unauthenticated request to provide a plain object where the then property is a QRL for...

@react-portable/core (>=0.4.0, <=0.11.2), storybook-framework-qwik (>=0.3.0, <=0.4.0) potentially affected by CVE-2026-32701 via @builder.io/qwik-city (>=1.2.6, <=1.4.1)

@builder.io/qwik-city NPM version =1.2.6, =0.4.0, =0.3.0, =0.4.0 Source cves: CVE-2026-32701 Source advisory: OSV:GHSA-WHHV-GG5V-864R...

@react-portable/core (>=0.4.0, <=0.11.2), storybook-framework-qwik (>=0.3.0, <=0.4.0) potentially affected by CVE-2026-32701 via @builder.io/qwik-city (>=1.2.6, <=1.4.1)

@builder.io/qwik-city NPM version =1.2.6, =0.4.0, =0.3.0, =0.4.0 Source cves: CVE-2026-32701 Source advisory: SNYK:JS-BUILDERIOQWIKCITY-15747112...

@react-portable/core (>=0.4.0, <=0.11.2), storybook-framework-qwik (>=0.3.0, <=0.4.0) potentially affected by CVE-2026-32701 via @builder.io/qwik-city (>=1.2.6, <=1.4.1)

@builder.io/qwik-city NPM version =1.2.6, =0.4.0, =0.3.0, =0.4.0 Source cves: CVE-2026-32701 Source advisory: GHSA-WHHV-GG5V-864R...

@react-portable/core (>=0.4.0, <=0.11.2), qwik-lottie (>=0.0.5, <=0.0.6) +1 more potentially affected by CVE-2026-32701 via @builder.io/qwik-city (>=0.0.112, <=1.4.1)

@builder.io/qwik-city NPM version =0.0.112, =0.4.0, =0.0.5, =0.0.1, =0.4.0 Source cves: CVE-2026-32701 Source advisory: MEND:CVE-2026-32701...

@leifermendez/partytown-qwik (>=1.0.3, <=1.0.7), @qwikui-org/ui (>=0.2.2, <=0.2.3) +6 more potentially affected by CVE-2026-27971 via @builder.io/qwik (>=0.9.0, <=1.4.5)

@builder.io/qwik NPM version =0.9.0, =1.0.3, =0.2.2, =0.4.0, =0.0.0-alpha-10, =0.0.0-alpha-9 - not-qwik-library-test1 0.0.3 - qwik-clipboard 1.0.0 - qwik-utilities 1.0.0 - storybook-framework-qwik 0.0.1 Source cves: CVE-2026-27971 Source advisory: MEND:CVE-2026-27971...

@qwikui-org/ui (>=0.2.2, <=0.2.3), @react-portable/core (>=0.4.0, <=0.11.2) +1 more potentially affected by CVE-2026-27971 via @builder.io/qwik (>=1.2.6, <=1.4.5)

@builder.io/qwik NPM version =1.2.6, =0.2.2, =0.4.0, =0.11.2 - not-qwik-library-test1 0.0.3 Source cves: CVE-2026-27971 Source advisory: GHSA-P9X5-JP3H-96MM...

@qwikui-org/ui (>=0.2.2, <=0.2.3), @react-portable/core (>=0.4.0, <=0.11.2) +1 more potentially affected by CVE-2026-27971 via @builder.io/qwik (>=1.2.6, <=1.4.5)

@builder.io/qwik NPM version =1.2.6, =0.2.2, =0.4.0, =0.11.2 - not-qwik-library-test1 0.0.3 Source cves: CVE-2026-27971 Source advisory: SNYK:JS-BUILDERIOQWIK-15369137...

@qwikui-org/ui (>=0.2.2, <=0.2.3), @react-portable/core (>=0.4.0, <=0.11.2) +1 more potentially affected by CVE-2026-27971 via @builder.io/qwik (>=1.2.6, <=1.4.5)

@builder.io/qwik NPM version =1.2.6, =0.2.2, =0.4.0, =0.11.2 - not-qwik-library-test1 0.0.3 Source cves: CVE-2026-27971 Source advisory: OSV:GHSA-P9X5-JP3H-96MM...

@react-portable/core (>=0.4.0, <=0.11.2), storybook-framework-qwik (>=0.3.0, <=0.4.0) potentially affected by CVE-2026-25149 via @builder.io/qwik-city (>=1.2.6, <=1.4.1)

@builder.io/qwik-city NPM version =1.2.6, =0.4.0, =0.3.0, =0.4.0 Source cves: CVE-2026-25149 Source advisory: SNYK:JS-BUILDERIOQWIKCITY-15202232...

@react-portable/core (>=0.4.0, <=0.11.2), storybook-framework-qwik (>=0.3.0, <=0.4.0) potentially affected by CVE-2026-25151 via @builder.io/qwik-city (>=1.2.6, <=1.4.1)

@builder.io/qwik-city NPM version =1.2.6, =0.4.0, =0.3.0, =0.4.0 Source cves: CVE-2026-25151 Source advisory: SNYK:JS-BUILDERIOQWIKCITY-15202302...

Cross-site Scripting (XSS)

Overview @builder.io/qwik is an An Open-Source sub-framework designed with a focus on server-side-rendering, lazy-loading, and styling/animation. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the unsafe virtual node serialization. An attacker can execute arbitra...

@qwikui-org/ui (>=0.2.2, <=0.2.3), @react-portable/core (>=0.4.0, <=0.11.2) +1 more potentially affected by CVE-2026-25148 via @builder.io/qwik (>=1.2.6, <=1.4.5)

@builder.io/qwik NPM version =1.2.6, =0.2.2, =0.4.0, =0.11.2 - not-qwik-library-test1 0.0.3 Source cves: CVE-2026-25148 Source advisory: SNYK:JS-BUILDERIOQWIK-15202114...

@react-portable/core (>=0.4.0, <=0.11.2), qwik-lottie (>=0.0.5, <=0.0.6) +1 more potentially affected by CVE-2026-25150 via @builder.io/qwik-city (>=0.0.112, <=1.4.1)

@builder.io/qwik-city NPM version =0.0.112, =0.4.0, =0.0.5, =0.0.1, =0.4.0 Source cves: CVE-2026-25150 Source advisory: MEND:CVE-2026-25150...