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    CVE-2026-3404

    A flaw has been found in thinkgem JeeSite up to 5.15.1. Impacted is an unknown function of the file /com/jeesite/common/shiro/cas/CasOutHandler.java of the component Endpoint. Executing a manipulation can lead to xml external entity reference. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is considered difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

    Published:Mar 2, 2026
    Last Modified:Apr 16, 2026
    EPS:Mar 2, 2026
    EPSS Score:0.00038
    CVSS Score:5

    Affected Products

    Vendor
    Jeesite
    Product
    Jeesite
    Vendor
    Thinkgem
    Product
    Jeesite

    Exploits

    https://www.yuque.com/la12138/pa2fpb/ew8x2qss8dv0bsu0?singleDoc

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-219 XML Routing Detour Attacks
    CAPEC-221 Data Serialization External Entities Blowup

    Related CVEs

    CVE-2026-3405 (CVSS 1.3) — A vulnerability has been found in thinkgem JeeSite up to 5.15.1. The affected element is an unknown function o…
    CVE-2025-9796 (CVSS 2) — A vulnerability was found in thinkgem JeeSite up to 5.12.1. This affects the function decodeUrl2 of the file c…
    CVE-2025-7865 (CVSS 2) — A vulnerability was found in thinkgem JeeSite up to 5.12.0. It has been declared as problematic. This vulnerab…
    CVE-2025-7864 (CVSS 2.1) — A vulnerability was found in thinkgem JeeSite up to 5.12.0. It has been classified as critical. This affects t…
    CVE-2025-7785 (CVSS 2.1) — A vulnerability classified as problematic was found in thinkgem JeeSite up to 5.12.0. This vulnerability affec…
    CVE-2025-7763 (CVSS 2.1) — A vulnerability, which was classified as problematic, was found in thinkgem JeeSite up to 5.12.0. Affected is …
    CVE-2025-7759 (CVSS 2.1) — A vulnerability was identified in thinkgem JeeSite up to 5.12.0. This vulnerability affects unknown code of th…
    CVE-2024-8112 (CVSS 6.9) — A vulnerability was found in thinkgem JeeSite 5.3. It has been rated as problematic. This issue affects some u…
    CVE-2023-38991 (CVSS 5.4) — An issue in the delete function in the ActModelController class of jeesite v1.2.6 allows authenticated attacke…
    CVE-2023-38990 (CVSS 4.3) — An issue in the delete function in the MenuController class of jeesite v1.2.6 allows authenticated attackers t…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High