thinkgem JeeSite up to 5.15.1 Endpoint CasOutHandler.java xml external entity reference

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.23

Summaryinfo

A vulnerability was found in thinkgem JeeSite up to 5.15.1. It has been rated as problematic. The affected element is an unknown function of the file /com/jeesite/common/shiro/cas/CasOutHandler.java of the component Endpoint. The manipulation leads to xml external entity reference. This vulnerability is traded as CVE-2026-3404. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in thinkgem JeeSite up to 5.15.1. It has been rated as problematic. This issue affects an unknown function of the file /com/jeesite/common/shiro/cas/CasOutHandler.java of the component Endpoint. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at yuque.com. The identification of this vulnerability is CVE-2026-3404. The exploitation is known to be difficult. The attack may be initiated remotely. Technical details as well as a public exploit are known.

The exploit is available at yuque.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-9137). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.0
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔒

CNA Base Score: 5.0
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/01/2026 Advisory disclosed
03/01/2026 +0 days VulDB entry created
03/09/2026 +8 days VulDB entry last update

Sourcesinfo

Advisory: yuque.com
Status: Not defined

CVE: CVE-2026-3404 (🔒)
GCVE (CVE): GCVE-0-2026-3404
GCVE (VulDB): GCVE-100-348299
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/01/2026 08:00
Updated: 03/09/2026 20:21
Changes: 03/01/2026 08:00 (56), 03/02/2026 03:31 (30), 03/02/2026 06:06 (1), 03/03/2026 15:23 (1), 03/09/2026 20:21 (11)
Complete: 🔍
Submitter: Saul1213
Cache ID: 216:9D0:103

Submitinfo

Accepted

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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