CVE-2026-4030: Database Backup for WordPress · Missing Authorization
Affects Database Backup for WordPressSource CVE Database V5
Not known to be exploited · CVSS 8.1 High.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 14 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| wpengineDatabase Backup for WordPress | Affected
| Fixed in– |
AI-suggested
Until an official fix is released, administrators of WordPress Multisite environments using this plugin should consider disabling or removing the Database Backup for WordPress plugin or restricting access to mitigate unauthorized file read and deletion risks. Monitor vendor channels for updates and apply patches promptly once available.
Description
The Database Backup for WordPress plugin up to version 2.5.2 contains a missing authorization vulnerability that allows unauthenticated attackers to read and delete arbitrary files on the server. This issue arises from improper enforcement of authorization checks combined with a user-controlled backup directory parameter. Exploitation is limited to WordPress Multisite environments where the deprecated is_site_admin() function is present. The vulnerability can lead to sensitive information exposure and potential site takeover. There is currently no confirmed patch or official remediation available.
References
- wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c837353da9?source=cve (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset/3510595/ (opens in a new tab)