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CRITICAL

CVE-2026-27971

CVSS v3

9.8

CRITICAL

EPSS Score

24.4 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

CVSS v3 Vector
3.1
Published
2026-03-03
Last Modified
2026-03-05

Frequently asked questions

What is CVE-2026-27971?

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.

Is CVE-2026-27971 actively exploited?

Active exploitation of CVE-2026-27971 has not been confirmed. The EPSS score is 24.4%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-27971?

CVE-2026-27971 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.

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