Improper Privilege Management in Xuxueli XXL-JOB by Xuxueli
CVE-2026-90487

5.3MEDIUM

Key Information:

Vendor

Xuxueli

Status
Xxl-job
Vendor
CVE Published:
12 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90487?

A vulnerability has been identified in Xuxueli XXL-JOB versions up to 3.4.2, specifically related to the JobGroupController.java file. This flaw allows for improper privilege management, which could potentially be exploited by an attacker remotely. Despite early notifications, the vendor has yet to respond to this disclosure, raising concerns about the availability of a fix and the security of affected systems. Users are advised to review their configurations and monitor for any unauthorized access or unusual activities.

Affected Version(s)

xxl-job 3.4.0

xxl-job 3.4.1

xxl-job 3.4.2

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-2026-90487 - Proof of Concept

References

https://vuldb.com/vuln/403075
vdb-entry
https://vuldb.com/vuln/403075/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90487
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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

zhaizejiang (VulDB User)
VulDB CNA Team
.