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CVE-2026-27971GHSA-P9X5-JP3H-96MM

Qwik affected by unauthenticated RCE via server$ Deserialization

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.19.1
1 proof of concept on GitHub, 1 Nuclei template
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

Qwik is a performance focused javascript framework. qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime. This vulnerability is fixed in 1.19.1.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • QwikDev qwik

    fixed in 1.19.1

  • @builder.io/qwiknpm

    fixed in 1.19.1

References 3

GitHub · QwikDev/qwik

GitHub · projectdiscovery/nuclei-templates

GitHub · Ghalendar/CVE-2026-27971_POC