How to fix CVE-2025-13863?

Within 30 days: Identify affected systems running all and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Is PHP affected by CVE-2025-13863?

Organizations using all should be aware of moderate risk from CVE-2025-13863, a cross-site scripting vulnerability rated CVSS 6.4. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

CVE-2025-13863

EUVD-2025-201520 MEDIUM

2025-12-06 [email protected]

WordPress XSS 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 15, 2026 - 17:37 vuln.today

EUVD ID Assigned

Mar 15, 2026 - 17:37 euvd

EUVD-2025-201520

CVE Published

Dec 06, 2025 - 06:15 nvd

MEDIUM 6.4

DescriptionNVD

The RevInsite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the token parameter in all versions up to, and including, 1.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-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

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

CVE-2025-13863 vulnerability details – vuln.today

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