CVE-2025-31729 Overview
CVE-2025-31729 is a Missing Authorization vulnerability affecting the WooTumblog (woo-tumblog) WordPress plugin developed by jeffikus. The flaw exists in all versions up to and including 2.1.4 and stems from incorrectly configured access control security levels. Attackers can exploit the plugin over the network without authentication or user interaction, enabling content injection into affected WordPress sites. The issue is tracked under CWE-862: Missing Authorization and was published to the National Vulnerability Database on April 3, 2025.
Critical Impact
Unauthenticated remote attackers can bypass access controls to inject content into WordPress sites running WooTumblog <= 2.1.4, affecting integrity and availability.
Affected Products
- WooTumblog plugin for WordPress by jeffikus
- All versions from n/a through <= 2.1.4
- WordPress sites with the woo-tumblog plugin installed and active
Discovery Timeline
- 2025-04-03 - CVE-2025-31729 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-31729
Vulnerability Analysis
The WooTumblog plugin exposes functionality without enforcing the authorization checks required to restrict access to privileged actions. Under CWE-862: Missing Authorization, the software does not perform an authorization check when an actor attempts to access a resource or execute a function. In this case, the plugin permits content injection operations without validating that the caller holds the appropriate WordPress capability or role.
An attacker sends crafted HTTP requests directly to plugin endpoints exposed by the WordPress installation. Because access control is not enforced server-side, requests from unauthenticated users are processed as if they were legitimate. The result is content injection into the affected site, which can be leveraged to alter posts, embed malicious payloads, or degrade the trust and availability of the site.
Root Cause
The root cause is the absence of capability checks (such as current_user_can()) and nonce verification (check_admin_referer() or wp_verify_nonce()) on plugin actions that modify site content. Without these gating checks, WordPress passes untrusted requests directly to sensitive handlers exposed by the plugin.
Attack Vector
Exploitation occurs over the network with low attack complexity and no privileges required. An attacker crafts an HTTP request to the vulnerable plugin endpoint on a target WordPress site. Because the plugin does not authenticate or authorize the caller, the request executes as intended, injecting attacker-controlled content. See the Patchstack advisory for WooTumblog for technical details.
Detection Methods for CVE-2025-31729
Indicators of Compromise
- Unexpected posts, pages, or media entries appearing on the WordPress site without corresponding admin activity in audit logs.
- HTTP POST or GET requests to woo-tumblog plugin endpoints originating from unauthenticated sessions or unusual IP addresses.
- Modifications to WordPress content tables (wp_posts, wp_postmeta) with authorship attributed to low-privilege or anonymous users.
Detection Strategies
- Inventory WordPress installations to identify sites running the woo-tumblog plugin at version <= 2.1.4.
- Review web server access logs for requests targeting plugin paths under /wp-content/plugins/woo-tumblog/ or plugin-registered AJAX actions in admin-ajax.php.
- Correlate content creation events with authenticated administrator sessions to identify unauthorized changes.
Monitoring Recommendations
- Enable WordPress audit logging to capture post creation, modification, and plugin action events with actor attribution.
- Alert on POST requests to admin-ajax.php with action parameters tied to the WooTumblog plugin from unauthenticated origins.
- Monitor for anomalous spikes in content creation volume outside expected editorial patterns.
How to Mitigate CVE-2025-31729
Immediate Actions Required
- Deactivate and remove the WooTumblog plugin from all WordPress installations until a fixed version is confirmed available from the vendor.
- Audit existing site content for unauthorized posts or injected material and restore from known-good backups where necessary.
- Restrict access to the WordPress admin and AJAX endpoints using a Web Application Firewall (WAF) rule filtering requests to woo-tumblog action handlers.
Patch Information
As of the latest NVD update on 2026-06-17, the advisory indicates the issue affects WooTumblog versions from n/a through <= 2.1.4. Refer to the Patchstack advisory for the current patch status and vendor guidance.
Workarounds
- Disable the woo-tumblog plugin via the WordPress admin console or by renaming its directory under /wp-content/plugins/.
- Deploy WAF signatures to block unauthenticated requests to plugin-specific AJAX actions and REST routes.
- Enforce network-level access controls limiting /wp-admin/admin-ajax.php to authenticated administrative IP ranges where feasible.
# Configuration example: disable the vulnerable plugin from the WordPress CLI
wp plugin deactivate woo-tumblog
wp plugin delete woo-tumblog
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
