CVE-2026-4030: CWE-862 Missing Authorization in wpengine Database Backup for WordPress
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 using the deprecated is_site_admin() function. The vulnerability can lead to sensitive information exposure and potential site takeover. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
CVE-2026-4030 is a high-severity vulnerability (CVSS 8.1) in the Database Backup for WordPress plugin by wpengine. The flaw is due to missing authorization enforcement (CWE-862) when handling a user-controlled backup directory parameter, enabling unauthenticated attackers to arbitrarily read and delete files on the server. This vulnerability specifically affects WordPress Multisite setups where the deprecated is_site_admin() function is present. No known exploits are reported in the wild, and no official patch or remediation level has been disclosed.
Potential Impact
Successful exploitation allows unauthenticated attackers to read and delete arbitrary files on the affected server, leading to sensitive information exposure and potential site takeover. The impact is high due to the confidentiality, integrity, and availability consequences. However, exploitation is constrained to WordPress Multisite environments with the deprecated is_site_admin() function, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators of WordPress Multisite environments using this plugin should consider disabling the plugin or restricting access to backup functionality. Monitor vendor channels for updates and apply patches promptly once available.
CVE-2026-4030: CWE-862 Missing Authorization in wpengine Database Backup for WordPress
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 using the deprecated is_site_admin() function. The vulnerability can lead to sensitive information exposure and potential site takeover. No official patch or remediation guidance is currently available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4030 is a high-severity vulnerability (CVSS 8.1) in the Database Backup for WordPress plugin by wpengine. The flaw is due to missing authorization enforcement (CWE-862) when handling a user-controlled backup directory parameter, enabling unauthenticated attackers to arbitrarily read and delete files on the server. This vulnerability specifically affects WordPress Multisite setups where the deprecated is_site_admin() function is present. No known exploits are reported in the wild, and no official patch or remediation level has been disclosed.
Potential Impact
Successful exploitation allows unauthenticated attackers to read and delete arbitrary files on the affected server, leading to sensitive information exposure and potential site takeover. The impact is high due to the confidentiality, integrity, and availability consequences. However, exploitation is constrained to WordPress Multisite environments with the deprecated is_site_admin() function, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators of WordPress Multisite environments using this plugin should consider disabling the plugin or restricting access to backup functionality. Monitor vendor channels for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-12T00:12:10.495Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a05c8f4ec166c07b0dcb79d
Added to database: 5/14/2026, 1:07:00 PM
Last enriched: 5/14/2026, 1:21:40 PM
Last updated: 5/14/2026, 4:44:48 PM
Views: 5
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