Improper Authorization in JeecgBoot Affects Remote Functionality
CVE-2026-5999

5.3MEDIUM

Key Information:

Vendor

Jeecg

Status
Jeecgboot
Vendor
CVE Published:
10 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5999?

A security flaw has been identified in JeecgBoot version 3.9.1 related to the SysAnnouncementController component. This vulnerability allows attackers to manipulate access controls, resulting in improper authorization. The exploit can be conducted remotely, raising concerns for potential unauthorized access to sensitive functions. The issue has been publicly disclosed, and the vendor has acknowledged the vulnerability, indicating that a fix will be implemented in an upcoming release.

Affected Version(s)

JeecgBoot 3.9.0

JeecgBoot 3.9.1

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-2026-5999 - Proof of Concept

References

https://vuldb.com/vuln/356553
vdb-entry
https://vuldb.com/vuln/356553/cti
signaturepermissions-required
https://vuldb.com/submit/793656
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

XinX (VulDB User)
VulDB CNA Team
.