EIP-2026-104021

PRE-CVE

Opera Web Browser 7.5 - Resource Detection

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-104021. PoCs published by GreyMagic Software.

AI-analyzed exploit summary This exploit leverages an IFRAME-based timing attack in Opera Web Browser to determine the existence of local files or directories by analyzing error messages. The PoC uses JavaScript to change the IFRAME's URI and checks for exceptions to infer resource existence.

Description

Opera Web Browser 7.5 - Resource Detection

Exploits (1)

exploitdb WORKING POC VERIFIED
by GreyMagic Software · textremotemultiple
https://www.exploit-db.com/exploits/24376

This exploit leverages an IFRAME-based timing attack in Opera Web Browser to determine the existence of local files or directories by analyzing error messages. The PoC uses JavaScript to change the IFRAME's URI and checks for exceptions to infer resource existence.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Opera Web Browser 7.53 and prior
No auth needed
Prerequisites: Victim must visit a malicious webpage · Opera browser version <= 7.53
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026