CVE-2026-27971
Qwik affected by unauthenticated RCE via server$ Deserialization
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.
INFO
Published Date :
March 3, 2026, 11:15 p.m.
Last Modified :
March 5, 2026, 5:57 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update Qwik to version 1.19.1.
- Ensure require() is not exposed at runtime.
- Remove unnecessary server-side code execution.
Public PoC/Exploit Available at Github
CVE-2026-27971 has a 4 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27971.
| URL | Resource |
|---|---|
| https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27971 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27971
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Distributed honeypot intelligence platform with LLM-powered adaptive deception, RL engagement scoring, automated SIEM rule generation (Suricata/Sigma/YARA), ML anomaly detection, and C2/covert channel detection. 55M+ events from 22K+ IPs across 122 countries. Rules auto-synced every 6h.
Shell Dockerfile Python YARA
None
Python
一个 CVE 漏洞预警知识库，无 exp/poc，部分包含修复方案。A knowledge base of CVE security vulnerability, no PoCs/exploits.
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27971 vulnerability anywhere in the article.
-
Daily CyberSecurity
Critical RCE Flaw in Qwik Framework Allows Server Takeover via Single Request
Security researchers have identified a critical vulnerability in Qwik, the popular web framework known for its “instant-on” performance and resumability. The flaw, tracked as CVE-2026-27971, carries a ... Read more
The following table lists the changes that have been made to the
CVE-2026-27971 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 05, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:qwik:qwik:*:*:*:*:*:node.js:*:* versions up to (excluding) 1.19.1 Added Reference Type GitHub, Inc.: https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm Types: Vendor Advisory -
New CVE Received by [email protected]
Mar. 03, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-502 Added Reference https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm