CVE-2026-4030
Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.46% · top 60% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
Affected products
wpengine · Database Backup for WordPress
- affected ≤ 2.5.2
References (6)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c837353da9?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php#L1623 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L157 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L1632 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L121 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset/3510595/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-4030)Record last updated .