CVE-2026-4730 — Cross-Site Scripting (XSS)
CVE-2026-4730 — The Charts Ninja: Create Beautiful Graphs & Charts and Easily Add Them to Your Website plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'chartid' shortcode attribute in all versions up to, and including, 2.1.0 due to insufficient input sanitization and output
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-2026-4730 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.
WordPress Charts Ninja Plugin Stored XSS via chartid attribute — CVE-2026-4730
title: WordPress Charts Ninja Plugin Stored XSS via chartid attribute — CVE-2026-4730
id: scw-2026-05-05-ai-1
status: experimental
level: medium
description: |
Detects potential exploitation of CVE-2026-4730 in the WordPress Charts Ninja plugin. This rule looks for the 'chartid' parameter in the URI query string, which is known to be vulnerable to Stored XSS due to insufficient sanitization. Attackers can inject malicious scripts into this parameter, which will be executed when users access pages containing these charts. This rule specifically targets the vulnerable parameter to avoid generic XSS detections.
author: SCW Feed Engine (AI-generated)
date: 2026-05-05
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-4730/
tags:
- attack.initial_access
- attack.t1189
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- 'chartid='
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-4730 | vulnerability | CVE-2026-4730 |
| CWE-79 | weakness | CWE-79 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 05, 2026 at 06:15 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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