Vulnerability · Published Mar 15, 2026 · Assigned by VulDB

CVE-2026-4186UEditor JSONP Callback controller.php cross site scripting

Low 3.5

In plain English

A low-severity cross-site scripting in UEditor. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)3.5Low

Exploit odds (30 days)0.3%top 83.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
n/a	UEditor	1.4.3.01.4.3.11.4.3.2

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-351092 | UEditor JSONP Callback controller.php cross site scripting vdb-entry, technical-description
VDB-351092 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #769842 | ueditor 1.4.3.2 jsonp injection third-party-advisory
https://magnificent-dill-351.notion.site/JSONP-Injection-in-ueditor-1-4-3-2-317c693918ed80cbb96dc8e1a9f0e8b2 exploit