What is CVE-2026-4564?

CVE-2026-4564 is a medium-severity vulnerability in Yangzongzhuan Ruoyi, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.7/10. Published 2026-03-23.

How severe is CVE-2026-4564?

Medium severity. CVSS v3 base score is 4.7 out of 10.

RCE in Yangzongzhuan Ruoyi

CVE-2026-4564

A security vulnerability has been detected in yangzongzhuan RuoYi up to 4.8.2. This issue affects some unknown processing of the file /monitor/job/ of the component Quartz Job Handler. Such manipulation of the argument invokeTarget leads to code injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

EPSS: 0.003 (24.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.

Affected products

Yangzongzhuan Ruoyi — versions 4.8.0, 4.8.1, 4.8.2

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-4564?: CVE-2026-4564 is a medium-severity vulnerability in Yangzongzhuan Ruoyi, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.7/10. Published 2026-03-23.
How severe is CVE-2026-4564?: Medium severity. CVSS v3 base score is 4.7 out of 10.