PT-2026-33020 · Onthemapmarketing · Accessibly – Wordpress Website Accessibility

Ronnachai Chaipha

+1

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Published

2026-04-15

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Updated

2026-04-15

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CVE-2026-3643

CVSS v3.1

7.2

High

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
The Accessibly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API in all versions up to, and including, 3.0.3. The plugin registers REST API endpoints at /otm-ac/v1/update-widget-options and /otm-ac/v1/update-app-config with the permission callback set to return true, which means no authentication or authorization check is performed. The updateWidgetOptions() function in AdminApi.php accepts user-supplied JSON data and passes it directly to AccessiblyOptions::updateAppConfig(), which saves it to the WordPress options table via update option() without any sanitization or validation. The stored widgetSrc value is later retrieved by AssetsManager::enqueueFrontendScripts() and passed directly to wp enqueue script() as the script URL, causing it to be rendered as a <script> tag on every front-end page. This makes it possible for unauthenticated attackers to inject arbitrary JavaScript that executes for all site visitors by changing the widgetSrc option to point to a malicious external script.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-3643

Affected Products

Accessibly – Wordpress Website Accessibility