Possible React2Shell Next.js Prototype Pollution Exploitation via Web Request (via webserver)

ATT&CK techniques

Initial Access

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects web requests carrying prototype pollution gadget markers aimed at Next.js Server Action handlers. This corresponds to the React2Shell exploitation technique that abuses a Next-Action prototype pollution chain to achieve remote code execution. Requests containing __proto__ gadget chains against a Next.js application indicate an attempted exploitation.

Reporting behind it

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Possible React2Shell Next.js Prototype Pollution Exploitation via Web Request (via webserver)

Pivot detection · T1190 · 9 related

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