CVE-2026-27971 CRITICAL

CVE-2026-27971: Qwik affected by unauthenticated RCE via server$ Deserialization

Vendor Qwikdev
Product qwik
Weakness CWE-502 · Unsafe deserialization
Published March 3, 2026
Last update March 4, 2026
View on NVD All CVEs

CVSS base score

9.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 3, 2026 CVE published
March 4, 2026 Record updated