How to fix CVE-2025-5537?

Within 30 days: Identify affected systems running for WordPress is vulnerable to Stored Cross-Site Scripting v and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Is Foobox affected by CVE-2025-5537?

Organizations using Modal Popup WordPress Plugin - FooBox should be aware of moderate risk from CVE-2025-5537, a cross-site scripting vulnerability rated CVSS 6.4. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

CVE-2025-5537

EUVD-2025-20387 MEDIUM

2025-07-08 [email protected]

WordPress XSS Foobox PHP

6.4

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20387

Patch Released

Mar 16, 2026 - 04:21 nvd

Patch available

CVE Published

Jul 08, 2025 - 05:15 nvd

MEDIUM 6.4

DescriptionNVD

The Lightbox & Modal Popup WordPress Plugin - FooBox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image alternative texts in all versions up to, and including, 2.7.34 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

AnalysisAI

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

A vendor patch is available — apply it immediately. Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.

CVE-2025-5537 vulnerability details – vuln.today

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