Is CVE-2026-4186 actively exploited?

No active exploitation of CVE-2026-4186 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4186 be exploited remotely?

Yes. CVE-2026-4186 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4186?

CVE-2026-4186 has a CVSS score of 3.5 (LOW).

HOME VULNERABILITIESCVE-2026-4186

LOW

CVE-2026-4186

CWE-79Published: March 16, 2026· Updated: Mar 16, 2026

3.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.8th

Official Description

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 causes cross site scripting. The attack can be initiated remotely. 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. This vulnerability only affects products that are no longer supported by the maintainer.

NVD Source

Technical Analysis

CVE-2026-4186 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.