EIP-2026-115646

PRE-CVE

Microsoft Edge Chakra - 'EmitAssignment' uses the 'this' Register Without Initializing

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-115646. PoCs published by Google Security Research.

AI-analyzed exploit summary This is a technical analysis of a JavaScript engine vulnerability (EIP-2026-138619) where the 'EmitAssignment' function fails to initialize the 'this' register when the 'super' keyword is used, leading to uninitialized register usage. The PoC demonstrates the issue in a class inheritance scenario.

Description

Microsoft Edge Chakra - 'EmitAssignment' uses the 'this' Register Without Initializing

Exploits (1)

exploitdb WRITEUP VERIFIED
by Google Security Research · htmldoswindows
https://www.exploit-db.com/exploits/42472

This is a technical analysis of a JavaScript engine vulnerability (EIP-2026-138619) where the 'EmitAssignment' function fails to initialize the 'this' register when the 'super' keyword is used, leading to uninitialized register usage. The PoC demonstrates the issue in a class inheritance scenario.

Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: JavaScript engine (likely V8 or similar)
No auth needed
Prerequisites: JavaScript engine with the specific vulnerability
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026