CVE-2026-7661 — Cross-Site Scripting (XSS)

CVE-2026-7661 — Cross-Site Scripting (XSS)

CVE-2026-7661 — 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 auth

What This Means For You

  • If your environment is affected by CWE-79, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-7661 updates and patches.

Related ATT&CK Techniques

🛡️ Detection Rules

3 rules · 6 SIEM formats

3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.

high T1190 Initial Access

WordPress Bootstrap Shortcode Plugin Stored XSS via 'box' shortcode — CVE-2026-7661

Sigma YAML — free preview
title: WordPress Bootstrap Shortcode Plugin Stored XSS via 'box' shortcode — CVE-2026-7661
id: scw-2026-05-12-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-7661 by identifying requests targeting the Bootstrap Shortcode plugin with the 'box' shortcode and containing script tags in the query string. This indicates a potential Stored XSS attack where an attacker injects malicious JavaScript into a WordPress page.
author: SCW Feed Engine (AI-generated)
date: 2026-05-12
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-7661/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/wp-content/plugins/bootstrap-shortcodes/'
      cs-uri-query|contains:
          - 'box'
      cs-uri-query|contains:
          - '<script>'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse

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Indicators of Compromise

IDTypeIndicator
CVE-2026-7661 vulnerability CVE-2026-7661
CWE-79 weakness CWE-79
Source & Attribution
Source PlatformNVD
ChannelNational Vulnerability Database
PublishedMay 12, 2026 at 12:16 UTC

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