CVE-2026-25150: critical vulnerability in QwikDev qwik
Prototype Pollution via FormData Processing in Qwik City
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.7%
Qwik is a performance focused javascript framework. Prior to version 1.19.0, a prototype pollution vulnerability exists in the formToObj() function within @builder.io/qwik-city middleware. The function processes form field names with dot notation (e.g., user.name) to create nested objects, but fails to sanitize dangerous property names like __proto__, constructor, and prototype. This allows unauthenticated attackers to pollute Object.prototype by sending crafted HTTP POST requests, potentially leading to privilege escalation, authentication bypass, or denial of service. This issue has been patched in version 1.19.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L
Affected products
QwikDev · qwikRelated CVEs — QwikDev qwik
In the same product, most dangerous first.
CVE-2026-27971CRITICALQwik affected by unauthenticated RCE via server$ DeserializationEPSS 5.5%CVE-2026-84994HIGHQwik: Crashing any Qwik Server via Resource thenableEPSS 0.5%CVE-2024-41677MEDIUMCross-site Scripting (XSS) vulnerability due to improper HTML escaping in qwikEPSS 0.5%CVE-2026-32701HIGHQwik has array method pollution in FormData processing, allowing type confusion and DoSEPSS 0.5%CVE-2025-53620CRITICALCrashing any Qwik ServerEPSS 0.4%CVE-2026-25148MEDIUMQwik SSR XSS via Unsafe Virtual Node SerializationEPSS 0.3%