Vulnerability · Published Sep 12, 2026 · Assigned by VulDB

CVE-2026-90488Xuxueli xxl-job GlueFactory.java GroovyClassLoader.parseClass code injection

Medium 6.3

In plain English

A medium-severity code injection in xxl-job from Xuxueli. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.4%top 66.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in Xuxueli xxl-job up to 3.4.2. This affects the function GroovyClassLoader.parseClass of the file xxl-job-core/src/main/java/com/xxl/job/core/glue/GlueFactory.java. This manipulation causes code injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Xuxueli	xxl-job	3.4.03.4.13.4.2

Weakness: CWE-94, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-403076 | Xuxueli xxl-job GlueFactory.java GroovyClassLoader.parseClass code injection vdb-entry, technical-description
VDB-403076 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-90488 | CVE Analysis and Report third-party-advisory
Submit #888470 | xuxueli XXL-JOB 3.4.2 Improper Control of Generation of Code third-party-advisory
https://github.com/zhaizejiang/xxl-job-vuln-poc/blob/main/xxl-job%20v3.4.2%20Remote%20Code%20Execution%20via%20Groovy%20Code%20Execution.md exploit