CVE-2026-27971CRITICAL 9.8EPSS p90.5%

CVE-2026-27971CVE-2026-27971

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS4.63% probability of exploitation · percentile 90.5% · 2026-06-19T12:03:05Z
Published2026-03-03
Last modified2026-03-05

Underlying weaknesses· 1

CWE-502

References

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

1

TypeTargetConfidenceTier
WeaknessDeserialization of Untrusted Datacwe-5020%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.