JeecgBoot up to 3.9.1 SysUser userEdit user.getUsername userIdentity access control

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in JeecgBoot up to 3.9.1. The affected element is the function user.getUsername of the file /sys/user/login/setting/userEdit of the component SysUser. This manipulation of the argument userIdentity causes access control. This vulnerability is registered as CVE-2026-9579. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in JeecgBoot up to 3.9.1. Affected by this vulnerability is the function user.getUsername of the file /sys/user/login/setting/userEdit of the component SysUser. The manipulation of the argument userIdentity with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-9579. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 3.9.2 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-31973). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
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: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: JeecgBoot 3.9.2

Timelineinfo

05/26/2026 Advisory disclosed
05/26/2026 +0 days VulDB entry created
05/27/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 9596
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-9579 (🔒)
GCVE (CVE): GCVE-0-2026-9579
GCVE (VulDB): GCVE-100-365635
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/26/2026 14:55
Updated: 05/27/2026 00:12
Changes: 05/26/2026 14:55 (61), 05/27/2026 00:12 (1)
Complete: 🔍
Submitter: AliceS614
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #817891: JeecgBoot 3.9.1 Improper Access Controls (by AliceS614)

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

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