EIP-2026-103713

PRE-CVE

WebKit JSC - 'arrayProtoFuncSplice' Uninitialized Memory Reference

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103713. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a use-after-free vulnerability in JavaScriptCore's `arrayProtoFuncSplice` function, where uninitialized values in the result array can lead to memory corruption if a garbage collection is triggered before initialization. The exploit uses a getter to force GC during array manipulation.

Description

WebKit JSC - 'arrayProtoFuncSplice' Uninitialized Memory Reference

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmldosmultiple
https://www.exploit-db.com/exploits/42374

This PoC exploits a use-after-free vulnerability in JavaScriptCore's `arrayProtoFuncSplice` function, where uninitialized values in the result array can lead to memory corruption if a garbage collection is triggered before initialization. The exploit uses a getter to force GC during array manipulation.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Racy
Target: WebKit JavaScriptCore (specific version not specified)
No auth needed
Prerequisites: Target must be using a vulnerable version of WebKit JavaScriptCore
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026