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CVE-2026-27971

CRITICAL CVSS 4.0: 9.2 EPSS 24.4%
Updated Mar 04, 2026
Qwik
Parameter Value
CVSS 9.2 (CRITICAL)
Fixed In 1.19.1
Type CWE-502 (Deserialization of Untrusted Data)
Vendor Qwik
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

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