Improper Access Control in JeecgBoot Affecting User Management Features
CVE-2026-9579

5.3MEDIUM

Key Information:

Vendor

JeecgBoot

Status
Jeecgboot
Vendor
CVE Published:
26 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9579?

A security vulnerability has been identified in JeecgBoot versions up to 3.9.1, specifically within the user management function located in the SysUser component. The flaw resides in the user.getUsername method, where the argument userIdentity can be manipulated, leading to improper access controls. This vulnerability allows unauthorized users to potentially gain access to sensitive information or perform unauthorized actions. The vulnerability can be exploited remotely, posing a significant risk to organizations using this software. It is strongly recommended to upgrade to version 3.9.2 to mitigate this issue and enhance security protocols.

Affected Version(s)

JeecgBoot 3.9.0

JeecgBoot 3.9.1

JeecgBoot 3.9.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-9579 - Proof of Concept

References

https://vuldb.com/vuln/365635
vdb-entrytechnical-description
https://vuldb.com/vuln/365635/cti
signaturepermissions-required
https://vuldb.com/submit/817891
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

AliceS614 (VulDB User)
.