EIP-2026-103990

PRE-CVE

Mozilla 1.x / opera 6/7 - Timed document.write Method Cross Domain Policy

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103990. PoCs published by meme-boi.

AI-analyzed exploit summary This exploit leverages a cross-domain security violation in browsers by using `window.open` with a `view-source` URI to bypass same-origin policy, potentially allowing arbitrary script execution in the local security zone. The PoC demonstrates this by opening a new window and injecting content after a delay.

Description

Mozilla 1.x / opera 6/7 - Timed document.write Method Cross Domain Policy

Exploits (1)

exploitdb WORKING POC VERIFIED
by meme-boi · textremotemultiple
https://www.exploit-db.com/exploits/22751

This exploit leverages a cross-domain security violation in browsers by using `window.open` with a `view-source` URI to bypass same-origin policy, potentially allowing arbitrary script execution in the local security zone. The PoC demonstrates this by opening a new window and injecting content after a delay.

Classification
Working Poc 80%
Attack Type
Xss
Complexity
Trivial
Reliability
Theoretical
Target: Unspecified browser (likely older versions with lax security policies)
No auth needed
Prerequisites: Victim interaction (e.g., visiting a malicious page) · Browser with vulnerable cross-domain handling
MITRE ATT&CK
mistral-large-3 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026