Accessibly <= 3.0.3 - Missing Authorization to Unauthenticated Stored Cross-Site Scripting via Widget Source Injection via REST API_CVE-2026-3643

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-04-15T08:28:17.565Z",
    "modified": "2026-04-15T08:28:17.565Z",
    "type": "cve",
    "title": "Accessibly <= 3.0.3 - Missing Authorization to Unauthenticated Stored Cross-Site Scripting via Widget Source Injection via REST API",
    "source": "Wordfence",
    "references": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f8234ea2-ff80-425f-b83d-29c422b40c6a?source=cve\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/Api/BaseApiController.php#L22\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/Api/BaseApiController.php#L22\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/admin/AdminApi.php#L65\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/admin/AdminApi.php#L65\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/Data/AccessiblyOptions.php#L69\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/Data/AccessiblyOptions.php#L69\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/AssetsManager.php#L63\nhttps://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/AssetsManager.php#L63",
    "id": "CVE-2026-3643",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "onthemapmarketing Accessibly \u2013 WordPress Website Accessibility 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Accessibly \u2013 WordPress Website Accessibility",
    "version": "0",
    "vendor": "onthemapmarketing",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}