CVE-2026-3404

thinkgem JeeSite Endpoint CasOutHandler.java xml external entity reference

HIGH
8.1
CVSS Score
Published: March 2, 2026 at 01:32 AM UTC
Updated: June 17, 2026 at 10:43 AM UTC
2 products affected across 2 vendorsJeesiteJeeSite

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Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

VDB EntryThird Party Advisory
Source: cverecord
https://vuldb.com/?id.348299
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.348299
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.763732
ExploitThird Party Advisory
Source: cverecord
https://www.yuque.com/la12138/pa2fpb/ew8x2qss8dv0bsu0?singleDoc

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-611CWE-610

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