CVE-2026-4076

[slider_bootstrap_carousel category="" onmouseover=alert(1) "] <!-- PoC Explanation: 1. Log in as a Contributor or higher user. 2. Create a new Post/Page. 3. Insert the above shortcode into the content. 4. Publish/Submit the post. 5. When an admin or user views the post, the injected onmouseover event triggers the XSS. -->

{"cve": {"id": "CVE-2026-4076", "sourceIdentifier": "[email protected]", "published": "2026-04-22T09:16:22.117", "lastModified": "2026-04-22T20:22:50.570", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Slider Bootstrap Carousel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'category' and 'template' shortcode attributes in all versions up to and including 1.0.7. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The plugin uses extract() on shortcode_atts() to parse attributes, then directly outputs the $category variable into multiple HTML attributes (id, data-target, href) on lines 38, 47, 109, and 113 without applying esc_attr(). Similarly, the $template attribute flows into a class attribute on line 93 without escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L109", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L113", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L38", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L47", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L7", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/tags/1.0.7/includes/sbc-shortcode.php#L93", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L109", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L113", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L38", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L47", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L7", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/slider-bootstrap-carousel/trunk/includes/sbc-shortcode.php#L93", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/26fe0b7b-dbf8-467f-b5e2-86a858eeaf89?source=cve", "source": "[email protected]"}]}}