CVE-2026-4029: Sensitive Information Exposure in Database Backup for WordPress
Platform
wordpress
Component
wp-db-backup
Fixed in
2.5.3
CVE-2026-4029 is a sensitive information exposure vulnerability affecting the Database Backup for WordPress plugin, specifically versions up to 2.5.2. Due to a flaw in authorization checks, unauthenticated attackers can export database tables. This vulnerability is only exploitable within WordPress Multisite environments. A fix is available in version 2.5.3.
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Impact and Attack Scenarios
Successful exploitation of CVE-2026-4029 allows an attacker to extract sensitive data directly from the WordPress database. This includes user credentials (usernames and passwords, potentially hashed), website configuration details, and any other information stored within the database. The impact is amplified in WordPress Multisite environments, where a single compromise can potentially expose data across multiple sites. The attacker could use this stolen data for further attacks, such as account takeover, privilege escalation, or data breaches. This vulnerability shares similarities with other database access flaws where insufficient authorization leads to unauthorized data extraction.
Exploitation Context
CVE-2026-4029 was published on May 13, 2026. The vulnerability's severity is rated as HIGH (CVSS 7.5). No public proof-of-concept (POC) code has been publicly released as of this writing. There are no indications of active exploitation campaigns targeting this vulnerability at this time. The vulnerability is tracked by the NVD and CISA.
Threat Intelligence
Exploit Status
CVSS Vector
What do these metrics mean?
- Attack Vector
- Network — remotely exploitable over the internet. No physical or local access required. Widest attack surface.
- Attack Complexity
- Low — no special conditions required. Attacker can exploit reliably without depending on rare configurations or timing.
- Privileges Required
- None — unauthenticated. No login or credentials needed to exploit.
- User Interaction
- None — attack is automatic and silent. Victim does nothing: no click, no file open.
- Scope
- Unchanged — impact is limited to the vulnerable component itself.
- Confidentiality
- High — complete confidentiality loss. Attacker can read all data: credentials, keys, personal data.
- Integrity
- None — no integrity impact. Attacker cannot modify data.
- Availability
- None — no availability impact. Service remains fully operational.
Affected Software
Weakness Classification (CWE)
Timeline
- Reserved
- Published
Mitigation and Workarounds
The primary mitigation for CVE-2026-4029 is to immediately upgrade the Database Backup for WordPress plugin to version 2.5.3 or later. If upgrading is not immediately feasible, consider temporarily disabling the plugin to prevent unauthorized access. While a direct workaround is not available, implementing strict access controls within the WordPress Multisite environment can help limit the potential blast radius. Regularly review WordPress user roles and permissions to ensure they are appropriately configured. Monitor WordPress logs for any unusual database activity.
How to fix
Update to version 2.5.3, or a newer patched version
Frequently asked questions
What is CVE-2026-4029 — Sensitive Information Exposure in Database Backup for WordPress?
CVE-2026-4029 is a HIGH severity vulnerability in the Database Backup for WordPress plugin affecting versions up to 2.5.2. It allows unauthenticated attackers to export database tables in WordPress Multisite environments, potentially exposing sensitive data.
Am I affected by CVE-2026-4029 in Database Backup for WordPress?
You are affected if you are using the Database Backup for WordPress plugin in a WordPress Multisite environment and are running version 2.5.2 or earlier. Check your plugin version immediately.
How do I fix CVE-2026-4029 in Database Backup for WordPress?
Upgrade the Database Backup for WordPress plugin to version 2.5.3 or later. If immediate upgrade is not possible, disable the plugin to prevent unauthorized access.
Is CVE-2026-4029 being actively exploited?
As of the current assessment, there are no indications of active exploitation campaigns targeting CVE-2026-4029, but vigilance is still advised.
Where can I find the official Database Backup for WordPress advisory for CVE-2026-4029?
Refer to the official Database Backup for WordPress plugin website and WordPress security announcements for the latest advisory and updates regarding CVE-2026-4029.
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