CVE-2026-3404

Name: CVE-2026-3404
Creator: NVD / NIST
Published: 2026-03-02T02:16:19.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.3/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2026-3404 is a low-severity vulnerability rated 1.3/10 on the CVSS scale. 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. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

1.3/10

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.35%

26.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jeesite	Jeesite	<= 5.15.1

References

https://vuldb.com/?ctiid.348299Permissions Required, VDB Entry
https://vuldb.com/?id.348299Third Party Advisory, VDB Entry
https://vuldb.com/?submit.763732Third Party Advisory, VDB Entry
https://www.yuque.com/la12138/pa2fpb/ew8x2qss8dv0bsu0?singleDocExploit, Third Party Advisory

Timeline

Published: Mar 2, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-3404?

How severe is CVE-2026-3404?

CVE-2026-3404 has a CVSS score of 1.3/10 (LOW severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3404?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3404?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST