CVE-2026-3405: Jeesite

High severity, CVSS 8.1. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability has been found in thinkgem JeeSite up to 5.15.1. The affected element is an unknown function of the component Connection Handler. The manipulation leads to path traversal. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Jeesite Jeesite: up to and including 5.15.1

Published 2026-03-02. Last modified 2026-06-17.