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PHP EUVD-2026-12243

| CVE-2026-4186 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-03-15 VulDB
PHP XSS
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

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
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.

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Vulnerability AssessmentAI

Risk Assessment Attackers can steal session cookies, redirect users to malicious sites, deface content, or perform actions on behalf of authenticated users. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker injects a JavaScript payload into a vulnerable input field. When another user views the page, the script executes in their browser, stealing their session token.
Remediation Encode all user-supplied output contextually (HTML, JS, URL). … Detailed patch versions, workarounds, and compensating controls in full report.
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During next maintenance window: Apply vendor patches when convenient. …

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EUVD-2026-12243 vulnerability details – vuln.today
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