CVE-2026-27971
high-risk
Published 2026-03-03
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.
Do I need to act?
!
24.4% chance of exploitation in next 30 days
EPSS score — higher than 76% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Qwik
Affected Vendors
References (1)
52
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
15/34 · Moderate
Exposure
5/34 · Minimal