CVE-2026-27971_POC

CVE-2026-27971 — Qwik server$ Unauthenticated RCE PoC !WARNING This repository contains an active remote-code-execution proof of concept. Use it only against systems you own or are explicitly authorized to test. The author assumes no responsibility for unauthorized use or damage. A standalone...

Qwik: Crashing any Qwik Server via Resource thenable

Summary A Qwik server in the default configuration can be crashed with one unauthenticated HTTP request. During qwik-json body parsing, ResourceSerializer.$fill$ does Promise.resolveresource.resolved. If resolved is a plain object whose .then is a QRL for an unregistered symbol, the async QRL...

CVE-2026-84994 Qwik: Crashing any Qwik Server via Resource thenable

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...

GHSA-M6JQ-G7GQ-5W3C Qwik SSR XSS via Unsafe Virtual Node Serialization

Summary Description A Cross-site Scripting CWE-79 vulnerability in Qwik.js' server-side rendering virtual attribute serialization allows a remote attacker to inject arbitrary web scripts into server-rendered pages via virtual attributes. Successful exploitation permits script execution in a...

EUVD-2025-20869

Malicious code in bioql PyPI...

CVE-2025-53620 Crashing any Qwik Server

@builder.io/qwik-city is the meta-framework for Qwik. When a Qwik Server Action QRL is executed it dynamically load the file containing the symbol. When an invalid qfunc is sent, the server does not handle the thrown error. The error then causes Node JS to exit. This vulnerability is fixed in...

CVE-2025-53620 Crashing any Qwik Server

@builder.io/qwik-city is the meta-framework for Qwik. When a Qwik Server Action QRL is executed it dynamically load the file containing the symbol. When an invalid qfunc is sent, the server does not handle the thrown error. The error then causes Node JS to exit. This vulnerability is fixed in...

CVE-2025-53620 Crashing any Qwik Server

@builder.io/qwik-city is the meta-framework for Qwik. When a Qwik Server Action QRL is executed it dynamically load the file containing the symbol. When an invalid qfunc is sent, the server does not handle the thrown error. The error then causes Node JS to exit. This vulnerability is fixed in...

Qwik's unhandled exception vulnerabilty can cause server crashes from malicious requests

Summary Possibility to craft a request that will crash the Qwik Server in the default configuration. Details When a Qwik Server Action QRL is executed it dynamically load the file containing the symbol. When an invalid qfunc is sent, the server does not handle the thrown error. The error then...

GHSA-QR9H-J6XG-2J72 Qwik's unhandled exception vulnerabilty can cause server crashes from malicious requests

Summary Possibility to craft a request that will crash the Qwik Server in the default configuration. Details When a Qwik Server Action QRL is executed it dynamically load the file containing the symbol. When an invalid qfunc is sent, the server does not handle the thrown error. The error then...

PT-2025-28958 · Builder.Io · @Builder.Io/Qwik-City

Name of the Vulnerable Software and Affected Versions: @builder.io/qwik-city versions prior to 1.13.0 Description: The @builder.io/qwik-city meta-framework for Qwik is susceptible to an issue where improper handling of invalid qfunc during the execution of a Qwik Server Action QRL can lead to a...

PT-2024-29502 · Qwik +1 · Qwik +1

Name of the Vulnerable Software and Affected Versions: Qwik versions prior to 1.6.0 @builder.io/qwik versions prior to 1.7.3 Description: A potential mutation XSS vulnerability exists in Qwik due to improper HTML escaping on server-side rendering. This occurs because Qwik converts strings accordi...