RCE in Ueditor
CVE-2026-4186
A vulnerability was determined in UEditor up to 1.4.3.2. This issue affects some unknown processing of the file php/controller.php?action=uploadimage of the component JSONP Callback Handler. This manipulation of the argument callback cause…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (2.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
Affected products
- N/a Ueditor — versions 1.4.3.0, 1.4.3.1, 1.4.3.2
Weakness classification (CWE)
References
- VDB-351092 | UEditor JSONP Callback controller.php cross site scripting (technical-description, vdb-entry)
- VDB-351092 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
- Submit #769842 | ueditor 1.4.3.2 jsonp injection (third-party-advisory)
- cna@vuldb.com (exploit)
Frequently asked questions
- What is CVE-2026-4186?
- CVE-2026-4186 is a low-severity vulnerability in Ueditor, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-03-16.
- How severe is CVE-2026-4186?
- Low severity. CVSS v3 base score is 3.5 out of 10.