CVE-2025-26555 HIGH

CVE-2025-26555: WordPress Debug-Bar-Extender Plugin <= 0.5 - Reflected Cross Site Scripting (XSS) vulnerability

Vendor Thorsten Ott
Product Debug-Bar-Extender
Weakness CWE-79 · XSS
Published March 15, 2025
Last update April 28, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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 Thorsten Ott Debug-Bar-Extender debug-bar-extender allows Reflected XSS.This issue affects Debug-Bar-Extender: from n/a through <= 0.5.

Explanation of Vulnerability in Simple Terms

02Summary

Debug Bar Extender versions 0.5 and earlier contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into the page. An attacker can craft a malicious link that, when visited by a site administrator, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the admin.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in an admin's browser session.

Potential impact on your site

04Site Impact

Admins visiting crafted links risk session compromise, credential theft, or unauthorized site modifications.

Conditions required to exploit

05Prerequisites

Attacker must trick an admin into clicking a malicious link; no authentication required.

Key dates

06Disclosure timeline

March 15, 2025 CVE published
April 28, 2026 Record updated