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PHP CVE-2026-4186

| EUVDEUVD-2026-12243 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-03-15 VulDB
2.0
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
2.0 LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

8
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
5.1 (MEDIUM) 2.0 (LOW)
Severity Changed
Apr 22, 2026 - 21:37 NVD
LOW MEDIUM
CVSS changed
Apr 22, 2026 - 21:37 NVD
3.5 (LOW) 5.1 (MEDIUM)
PoC Detected
Mar 16, 2026 - 14:53 vuln.today
Public exploit code
EUVD ID Assigned
Mar 15, 2026 - 20:00 euvd
EUVD-2026-12243
Analysis Generated
Mar 15, 2026 - 20:00 vuln.today
CVE Published
Mar 15, 2026 - 19:02 nvd
LOW 3.5

DescriptionCVE.org

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.

AnalysisAI

A vulnerability was determined in UEditor up to 1.4.3.2.

Technical ContextAI

Cross-site scripting (XSS) allows injection of client-side scripts into web pages viewed by other users due to insufficient output encoding.

RemediationAI

Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.

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CVE-2026-4186 vulnerability details – vuln.today

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