CVE-2026-4030 Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion
Unauthenticated attackers can read and delete arbitrary files in WordPress Multisite environments using the Database Backup plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4030?
CVE-2026-4030 is a high-severity missing authorization vulnerability in wpengine Database Backup for WordPress, published on 14 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Database Backup for WordPress plugin for WordPress is vulnerable to unauthorized arbitrary file read and deletion in all versions up to, and including, 2.5.2. This is due to the plugin not properly enforcing the return value of its authorization check combined with a user-controlled backup directory parameter. This makes it possible for unauthenticated attackers to read and delete arbitrary files on the server, leading to Sensitive Information Exposure and potential site takeover. Note: This vulnerability is only exploitable in WordPress Multisite environments where the deprecated is_site_admin() function exists.
Weakness: CWE-862
Which versions are affected by CVE-2026-4030?
How do I fix CVE-2026-4030?
No fix has been published for CVE-2026-4030 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4030 being exploited?
There is no known exploitation of CVE-2026-4030 in the wild and no public exploit code.
Sources
Also known as GHSA-v7cf-3qh3-fc52.