CVE-2025-63072 MEDIUM

CVE-2025-63072: WordPress Cornerstone plugin <= 7.7.3 - Cross Site Scripting (XSS) vulnerability

Vendor Themeco
Product Cornerstone
Weakness CWE-79 · XSS
Published December 9, 2025
Last update April 28, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in THEMECO Cornerstone cornerstone allows Stored XSS.This issue affects Cornerstone: from n/a through <= 7.7.3.

Explanation of Vulnerability in Simple Terms

02Summary

Cornerstone versions up to 7.7.3 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level access can craft a request that, when visited by another user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in other users' browsers to steal data or perform actions on their behalf.

Potential impact on your site

04Site Impact

Authenticated users' accounts and data are at risk if they interact with crafted content; site reputation and user trust may be compromised.

Conditions required to exploit

05Prerequisites

Attacker must have low-level user account access and the victim must visit a page containing the malicious payload.

Key dates

06Disclosure timeline

December 9, 2025 CVE published
April 28, 2026 Record updated