CVE-2026-7661 MEDIUM

CVE-2026-7661: Bootstrap Shortcode <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'box' Shortcode

Vendor Shamim_D
Product Bootstrap Shortcode
Weakness CWE-79 · XSS
Published May 12, 2026
Last update May 13, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The Bootstrap Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `box` shortcode in all versions up to, and including, 1.0. This is due to insufficient input sanitization and output escaping on user supplied attributes. 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.

Explanation of Vulnerability in Simple Terms

02Summary

Bootstrap Shortcode versions 1.0 and earlier contain a cross-site scripting (XSS) vulnerability in shortcode processing. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, including administrators. The vulnerability affects the entire site scope due to how shortcodes are rendered across multiple pages.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers, potentially stealing session tokens or performing actions as those users.

Potential impact on your site

04Site Impact

Authenticated users can compromise other users' accounts or sessions through injected scripts in shortcodes visible site-wide.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account (e.g., contributor or subscriber) on the site; no user interaction required from victims.

Key dates

06Disclosure timeline

May 12, 2026 CVE published
May 13, 2026 Record updated

Related vulnerabilities

08Related CVE