critical9.2
CVE-2026-27971
Qwik vulnerable to Unauthenticated RCE via server$ Deserialization
Impact
### Summary 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. ### Impact - Remote Code Execution
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @builder.io/qwik | <= 1.19.0 | 1.19.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Qwik | Qwik | before 1.19.1 |