What is the CVSS score of CVE-2026-3533?

CVE-2026-3533 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of PHP are affected by CVE-2026-3533?

The Jupiter X Core WordPress plugin contains a critical file upload vulnerability that could allow attackers with basic user accounts to execute malicious code or inject attacks directly into your…

PHP CVE-2026-3533

EUVD-2026-14650 HIGH

Unrestricted Upload of File with Dangerous Type (CWE-434)

2026-03-23 Wordfence

GHSA-wv9g-vw7m-7mq8

PHP WordPress XSS RCE Apache File Upload

8.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Re-analysis Queued

Apr 24, 2026 - 16:37 vuln.today

cvss_changed

EUVD ID Assigned

Mar 23, 2026 - 23:45 euvd

EUVD-2026-14650

Analysis Generated

Mar 23, 2026 - 23:45 vuln.today

CVE Published

Mar 23, 2026 - 23:25 nvd

HIGH 8.8

DescriptionNVD

The Jupiter X Core plugin for WordPress is vulnerable to limited file uploads due to missing authorization on import_popup_templates() function as well as insufficient file type validation in the upload_files() function in all versions up to, and including, 4.14.1. This makes it possible for Authenticated attackers with Subscriber-level access and above, to upload files with dangerous types that can lead to Remote Code Execution on servers configured to handle .phar files as executable PHP (e.g., Apache+mod_php), or Stored Cross-Site Scripting via .svg, .dfxp, or .xhtml files upload on any server configuration

AnalysisAI

The Jupiter X Core plugin for WordPress contains an unrestricted file upload vulnerability allowing authenticated users with Subscriber-level privileges or higher to upload dangerous file types including .phar, .svg, .dfxp, and .xhtml files. This stems from missing authorization checks in the import_popup_templates() function and insufficient file type validation in the upload_files() function. …

RemediationAI

Within 24 hours: Identify all WordPress installations using Jupiter X Core plugin and document affected systems; disable the plugin's file upload functionality if possible. Within 7 days: Audit recent file uploads in affected systems for suspicious .phar, .svg, .dfxp, and .xhtml files; implement Web Application Firewall rules to block these file types; review user access logs for unauthorized upload attempts. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-3533 vulnerability details – vuln.today

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PHP CVE-2026-3533

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

Full analysis requires sign-in

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External POC / Exploit Code