EIP-2026-107546

PRE-CVE

H2O-CMS 3.4 - Insecure Cookie Handling

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-107546. PoCs published by Stack.

AI-analyzed exploit summary This exploit demonstrates an insecure cookie handling vulnerability in H2O-CMS <= 3.4, allowing an attacker to set an 'admin' cookie via JavaScript to bypass authentication.

Description

H2O-CMS 3.4 - Insecure Cookie Handling

Exploits (1)

exploitdb WORKING POC VERIFIED
by Stack · textwebappsphp
https://www.exploit-db.com/exploits/6862

This exploit demonstrates an insecure cookie handling vulnerability in H2O-CMS <= 3.4, allowing an attacker to set an 'admin' cookie via JavaScript to bypass authentication.

Classification
Working Poc 90%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: H2O-CMS <= 3.4
No auth needed
Prerequisites: Victim must execute the provided JavaScript code
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026