EIP-2026-103439

PRE-CVE

Chrome V8 JIT - JSBuiltinReducer::ReduceObjectCreate Fails to Ensure that the Prototype is _null_

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103439. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a type confusion vulnerability in V8's Object.create implementation, where the prototype check fails to ensure the prototype is null or a JSReceiver, leading to potential memory corruption. The exploit triggers the bug by manipulating the prototype during optimization.

Description

Chrome V8 JIT - JSBuiltinReducer::ReduceObjectCreate Fails to Ensure that the Prototype is _null_

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdosmultiple
https://www.exploit-db.com/exploits/44258

This PoC exploits a type confusion vulnerability in V8's Object.create implementation, where the prototype check fails to ensure the prototype is null or a JSReceiver, leading to potential memory corruption. The exploit triggers the bug by manipulating the prototype during optimization.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Google V8 JavaScript Engine (Chromium-based browsers)
No auth needed
Prerequisites: V8 engine with the vulnerable commit (ff7063c7d5d8ad8eafcce3da59e65d7fe2b4f915)
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026