CVE-2026-27971

Qwik affected by unauthenticated RCE via server$ Deserialization

State: Published
Severity: 9.2 Critical
Published: Mar 3, 2026
Updated: Mar 4, 2026
Reserved: Feb 25, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	9.2 Critical	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	GitHub_M

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
qwikQwikDev	< 1.19.1Affected

References

https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm

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