CVE-2026-6646 — Cross-Site Scripting (XSS)
CVE-2026-6646 — The The7 theme for WordPress is vulnerable to Stored Cross-Site Scripting via the 'dt_default_button' shortcode in all versions up to, and including, 14.3.2. This is due to insufficient input sanitization and output escaping on the 'title' component of the 'link' shortcode parameter.
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-2026-6646 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 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.
CVE-2026-6646 - Stored XSS in The7 Theme Button Shortcode
title: CVE-2026-6646 - Stored XSS in The7 Theme Button Shortcode
id: scw-2026-05-15-ai-1
status: experimental
level: high
description: |
Detects the specific Stored Cross-Site Scripting (XSS) vulnerability in The7 WordPress theme (CVE-2026-6646). This rule looks for the 'dt_default_button' shortcode within the URI query string, specifically when the 'title' or 'link' parameters contain script tags, indicating a potential injection attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-05-15
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-6646/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- 'dt_default_button'
cs-uri-query|contains:
- 'title='
cs-uri-query|contains:
- 'link='
cs-uri-query|contains:
- '<script>'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-6646 | vulnerability | CVE-2026-6646 |
| CWE-79 | weakness | CWE-79 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 15, 2026 at 10:16 UTC |
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