CVE-2026-6227 BackWPup <= 5.6.6 - Authenticated (Administrator+) Local File Inclusion via 'block_name' Parameter
Authenticated administrators can exploit path traversal in BackWPup to read sensitive files or execute code via the block_name parameter.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6227?
CVE-2026-6227 is a high-severity path traversal vulnerability in wp_media BackWPup – WordPress Backup & Restore Plugin, published on 14 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-6227?
How do I fix CVE-2026-6227?
No fix has been published for CVE-2026-6227 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-6227 being exploited?
There is no known exploitation of CVE-2026-6227 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-6gj4-hcqg-pjc8.