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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-4031 Detail

Description

The Database Backup for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.5.2. This is due to the plugin not restricting access to the wp_db_temp_dir parameter, which controls where database backups are written. This makes it possible for unauthenticated attackers to send a request to wp-cron.php with a poisoned wp_db_temp_dir value pointing to a publicly accessible directory (e.g., wp-content/uploads/), and if a scheduled backup is due, intercept the backup file before it is cleaned up. The backup file has a predictable name based on the database name, table prefix, date, and Swatch Internet Time, making interception reliable. Successful exploitation leads to Sensitive Information Exposure including database credentials, user password hashes, and personally identifiable information. This vulnerability requires that the site administrator has configured scheduled backups.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php#L121 Wordfence
https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L121 Wordfence
https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L1568 Wordfence
https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L85 Wordfence
https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L961 Wordfence
https://plugins.trac.wordpress.org/changeset/3510595/ Wordfence
https://www.wordfence.com/threat-intel/vulnerabilities/id/36615cae-418f-48b0-ba69-b54515cbe1d7?source=cve Wordfence

Weakness Enumeration

CWE-ID CWE Name Source
CWE-862 Missing Authorization Wordfence  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-4031
NVD Published Date:
05/14/2026
NVD Last Modified:
05/14/2026
Source:
Wordfence