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.
CVE-2026-6227 is a high severity with CVSS 7.2 Remote Code Execution issue affecting the Plugin BackWPup – WordPress Backup & Restore Plugin. It affects Versions up to 5.6.6 and is fixed in 5.6.7.
Use the related hub and response guides to connect this CVE-2026-6227 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-6227 is tracked for the Plugin BackWPup – WordPress Backup & Restore Plugin as high severity with CVSS 7.2. The affected range is Versions up to 5.6.6. Update BackWPup – WordPress Backup & Restore Plugin to 5.6.7 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 5.6.6.
Confirm BackWPup – WordPress Backup & Restore Plugin is updated to 5.6.7 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
backwpup
View on wordpress.org
|
| CVE | CVE-2026-6227 |
| Patched Versions |
5.6.7
|
| Affected Versions |
Versions up to 5.6.6
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
BackWPup <= 1.7.1 - Remote File Inclusion
BackWPup <= 4.0.1 - Authenticated (Administrator+) Directory Traversal
BackWPup <= 4.0.3 - Sensitive Information Exposure
BackWPup <= 3.4.1 - Unauthenticated Backup Download
BackWPup – WordPress Backup Plugin < 1.4.1 - Directory Traversal
BackWPup 5.0.0 - 5.6.2 - Authenticated (BackWPup Helper+) Privilege Escalation via Arbitrary Options Update
BackWPup <= 4.0.1 - Authenticated (Administrator+) Directory Traversal
BackWPup < 3.0.13 - Cross-Site Scripting
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