Remote code execution via unsandboxed Groovy compilation
Published Sep 12, 2026 · Updated Sep 12, 2026
Code injection in xuxueli XXL-JOB 3.4.0 through 3.4.2 allows remote attackers to execute code through crafted Groovy job source. GlueFactory passes the request's glueSource directly to GroovyClassLoader.parseClass and instantiates the resulting class without sandboxing or validation. The executor endpoint must be reachable, and exploitation requires the configured access token unless token checking is disabled by an empty value.
Summary
What happened
Code injection in xuxueli XXL-JOB 3.4.0 through 3.4.2 allows remote attackers to execute code through crafted Groovy job source. GlueFactory passes the request's glueSource directly to GroovyClassLoader.parseClass and instantiates the resulting class without sandboxing or validation. The executor endpoint must be reachable, and exploitation requires the configured access token unless token checking is disabled by an empty value.
The record
- CVE
- CVE-2026-90488
- Published
- Sep 12, 2026
- Updated
- Sep 12, 2026
- Vendor
- Xuxueli
- Product
- XXL-JOB
- Classifications
- T1190, T1059
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 12, 2026CVE publishedPublication date reported by the CVE source.
- Sep 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.4.0
- Affected versionversion=3.4.1
- Affected versionversion=3.4.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- XXL-JOB executor Groovy injection requestproof of concept · unverified
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Technologies
Your stack
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Your stack
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