EIP-2026-104168

PRE-CVE

Apple WebKit / Safari 10.0.2(12602.3.12.0.1) - 'PrototypeMap::createEmptyStructure' Universal Cross-Site Scripting

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-104168. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit leverages a UXSS vulnerability in WebKit's JavaScript engine by manipulating the prototype chain and using Reflect.construct to create an object with a cross-origin window as its prototype, bypassing same-origin policy.

Description

Apple WebKit / Safari 10.0.2(12602.3.12.0.1) - 'PrototypeMap::createEmptyStructure' Universal Cross-Site Scripting

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmlwebappsmultiple
https://www.exploit-db.com/exploits/41899

This exploit leverages a UXSS vulnerability in WebKit's JavaScript engine by manipulating the prototype chain and using Reflect.construct to create an object with a cross-origin window as its prototype, bypassing same-origin policy.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Moderate
Reliability
Reliable
Target: Safari 10.0.2(12602.3.12.0.1) and WebKit Nightly 10.0.2(12602.3.12.0.1, r210800)
No auth needed
Prerequisites: Victim must visit a malicious webpage · Target must use vulnerable Safari/WebKit version
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026