Privilege escalation in Xuxueli Xxl-Job
CVE-2026-90487
A vulnerability was found in Xuxueli xxl-job up to 3.4.2. Affected by this issue is some unknown functionality of the file xxl-job-admin/src/main/java/com/xxl/job/admin/business/controller/JobGroupController.java. The manipulation results in improper privilege management. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (28.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Xuxueli Xxl-Job — versions 3.4.0, 3.4.1, 3.4.2
Weakness classification (CWE)
References
- github.com/zhaizejiang/xxl-job-vuln-poc/edit/main/xxl-job3.4.2_loadById Endpoin… (exploit)
- vuldb.com/cve/CVE-2026-90487 (third-party-advisory)
- vuldb.com/submit/888438 (third-party-advisory)
- vuldb.com/vuln/403075 (vdb-entry)
- vuldb.com/vuln/403075/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-90487?
- CVE-2026-90487 is a medium-severity vulnerability in Xuxueli Xxl-Job, classified under Incorrect Privilege Assignment. CVSS score: 4.3/10. Published 2026-09-12.
- How severe is CVE-2026-90487?
- Medium severity. CVSS v3 base score is 4.3 out of 10.