CVE-2024-43269 Overview
CVE-2024-43269 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the WPBackItUp Backup and Restore WordPress plugin through version 1.50. The flaw allows a remote attacker to trick an authenticated administrator into submitting forged requests to the plugin. Successful exploitation requires user interaction, typically by luring a logged-in user to a malicious web page. The vulnerability maps to [CWE-352] and impacts integrity of the plugin state without requiring attacker authentication.
Critical Impact
A remote attacker can force an authenticated WordPress administrator to perform unintended plugin actions, potentially altering backup and restore operations.
Affected Products
- WPBackItUp Backup and Restore WordPress plugin versions up to and including 1.50
- WordPress sites running the vulnerable wp-backitup plugin
- Any deployment where administrators access the WordPress dashboard while browsing untrusted content
Discovery Timeline
- 2024-08-26 - CVE-2024-43269 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-43269
Vulnerability Analysis
The WPBackItUp plugin exposes state-changing administrative actions without validating the origin of the request. Requests initiated from an external domain are processed as legitimate as long as the victim carries a valid WordPress session cookie. The result is that an attacker can pre-craft a request targeting the plugin's administrative endpoints and cause the browser of an authenticated user to submit it. This class of flaw is tracked as [CWE-352] and is common in WordPress plugins that rely on session cookies alone rather than anti-CSRF tokens.
Root Cause
The plugin fails to enforce WordPress nonce verification (wp_verify_nonce / check_admin_referer) on privileged actions. Without a request-scoped token, the server cannot distinguish between a request initiated by the administrator inside wp-admin and one initiated by an attacker-controlled page. Any state change gated only by cookie-based authentication is exploitable through a forged cross-origin submission.
Attack Vector
The attack requires no attacker credentials but does require user interaction. An attacker hosts a page containing a hidden form or image tag that targets the vulnerable plugin endpoint on a victim WordPress site. When an administrator visits the attacker-controlled page in the same browser session as their WordPress dashboard, the browser attaches valid authentication cookies and executes the request. See the Patchstack WP-Backitup CSRF Vulnerability advisory for additional technical context.
No verified proof-of-concept code has been published for this CVE.
Detection Methods for CVE-2024-43269
Indicators of Compromise
- Unexpected backup creation, deletion, or restore events logged by the WPBackItUp plugin outside of scheduled administrator activity
- HTTP POST requests to wp-admin/admin.php or admin-ajax.php referencing WPBackItUp actions with an external or missing Referer header
- Administrator sessions performing plugin actions immediately after visiting untrusted external sites
Detection Strategies
- Inspect web server access logs for requests to WPBackItUp administrative endpoints where the Referer header does not match the WordPress site origin
- Correlate WordPress audit logs of plugin state changes with the browsing activity of the initiating administrator account
- Alert on requests to plugin endpoints that lack a valid _wpnonce parameter
Monitoring Recommendations
- Enable a WordPress audit logging plugin to record all administrative actions, including plugin configuration changes
- Forward WordPress and web server logs to a centralized SIEM for cross-source correlation
- Baseline normal administrator activity to make anomalous backup or restore operations easier to identify
How to Mitigate CVE-2024-43269
Immediate Actions Required
- Update the WPBackItUp Backup and Restore WordPress plugin to a version later than 1.50 as soon as a fixed release is available from the vendor
- Restrict WordPress administrator dashboard access to trusted networks using web server or WAF rules
- Require administrators to use a dedicated browser or browser profile for WordPress dashboard sessions to reduce cross-site exposure
Patch Information
Refer to the Patchstack WP-Backitup CSRF Vulnerability advisory for the current vendor remediation status. Apply the vendor-supplied update through the WordPress plugin manager once released. No vendor advisory URL is currently referenced in the CVE record beyond the Patchstack entry.
Workarounds
- Deactivate the WPBackItUp plugin until a patched version is installed if backup automation is not immediately required
- Deploy a web application firewall rule that blocks requests to WPBackItUp endpoints missing a valid _wpnonce parameter or containing an off-origin Referer
- Enforce SameSite=Lax or SameSite=Strict cookies on the WordPress session where compatible with the deployment
# Example WAF rule concept: block off-origin POSTs to WPBackItUp endpoints
# Pseudocode for a ModSecurity-style rule
SecRule REQUEST_URI "@contains wp-backitup" \
"chain,deny,status:403,msg:'Possible CSRF against WPBackItUp'"
SecRule REQUEST_METHOD "@streq POST" "chain"
SecRule REQUEST_HEADERS:Referer "!@beginsWith https://your-site.example/"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
