PT-2026-6472 · Npm · @Builder.Io/Qwik-City

Published 2026-02-03 · Updated 2026-02-03

OSV

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N

Summary

Qwik City’s server-side request handler inconsistently interprets HTTP request headers, which can be abused by a remote attacker to circumvent form submission CSRF protections using specially crafted or multi-valued Content-Type headers.

Impact

A vulnerability in checkCSRF lets an attacker bypass Origin-based CSRF checks by using malformed or multi-valued Content-Type headers. Exploitation requires the CORS preflight to succeed (so it’s blocked if preflight is denied) and is possible when the application accepts cross-origin requests or via non-browser clients. Impact varies with server CORS and cookie policies and may enable unauthorized state changes.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

GHSA-R666-8GJF-4V5F

Affected Products

@Builder.Io/Qwik-City

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-25151 · Security Note
• https://osv.dev/vulnerability/GHSA-r666-8gjf-4v5f · Vendor Advisory
• https://github.com/QwikDev/qwik · Note
• https://github.com/QwikDev/qwik/commit/eebf610e04cc3a690f11e10191d09ff0fca1c7ed · Note
• https://github.com/QwikDev/qwik/security/advisories/GHSA-r666-8gjf-4v5f · Note