Code Injection Vulnerability in Xuxueli XXL-JOB by Xuxueli
CVE-2026-90488

5.3MEDIUM

Key Information:

Vendor

Xuxueli

Status
Xxl-job
Vendor
CVE Published:
12 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90488?

A code injection vulnerability exists in Xuxueli XXL-JOB versions up to 3.4.2. This issue arises in the GroovyClassLoader.parseClass function within the GlueFactory.java file. An attacker can exploit this vulnerability remotely to inject malicious code, potentially leading to unauthorized access or control over the affected application. This vulnerability was publicly disclosed, and the vendor did not respond to early notifications regarding the issue, which raises concerns about its mitigation.

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-2026-90488 - Proof of Concept

References

https://vuldb.com/vuln/403076
vdb-entrytechnical-description
https://vuldb.com/vuln/403076/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90488
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

zhaizejiang (VulDB User)
VulDB CNA Team
.