CVE-2025-23985: Dynamic URL SEO CSRF Vulnerability

CVE-2025-23985 Overview

CVE-2025-23985 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the brainvireinfo Dynamic URL SEO plugin for WordPress. The flaw impacts all versions of the dynamic-url-seo plugin up to and including version 1.0. An attacker can trick an authenticated user into submitting a forged request that performs unintended state-changing actions on the target site. The vulnerability is classified under CWE-352: Cross-Site Request Forgery and requires user interaction to succeed. Exploitation typically involves luring a logged-in WordPress administrator to a malicious page that triggers requests to the vulnerable plugin endpoints.

Critical Impact
Successful exploitation allows attackers to perform unauthorized plugin actions in the context of an authenticated WordPress user, leading to limited integrity and availability impact on affected sites.

Affected Products

brainvireinfo Dynamic URL SEO WordPress plugin
Plugin slug: dynamic-url-seo
All versions up to and including 1.0

Discovery Timeline

2025-01-31 - CVE-2025-23985 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-23985

Vulnerability Analysis

The Dynamic URL SEO plugin fails to validate the origin and authenticity of state-changing HTTP requests. The plugin does not verify WordPress nonces or use equivalent anti-CSRF tokens on privileged actions. As a result, an attacker can craft a malicious page or link that, when visited by an authenticated user, causes the browser to submit forged requests to the WordPress site. The browser automatically includes the victim's authentication cookies, and the plugin processes the request as legitimate.

The issue affects the plugin from an unspecified initial version through version 1.0, and no patched release is referenced in the advisory.

Root Cause

The root cause is missing CSRF protection on plugin request handlers. WordPress provides wp_nonce_field() and check_admin_referer() primitives that plugins must use to validate the origin of form submissions and AJAX calls. The Dynamic URL SEO plugin omits these checks on sensitive endpoints, leaving action handlers reachable through cross-origin form submissions.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker hosts a page containing an auto-submitting form or image tag that targets a vulnerable WordPress endpoint exposed by the plugin. When an authenticated administrator visits the attacker-controlled page, the browser transmits the forged request with valid session cookies. The plugin executes the requested action without verifying that the user intentionally initiated it.

The vulnerability manifests through missing nonce validation on plugin request handlers. See the Patchstack WordPress Vulnerability Report for advisory details.

Detection Methods for CVE-2025-23985

Indicators of Compromise

Unexpected configuration changes within the Dynamic URL SEO plugin settings
HTTP POST requests to plugin admin endpoints originating from external Referer headers
WordPress admin actions performed outside expected user activity windows
Modified SEO URL mappings or redirect rules that were not authorized by administrators

Detection Strategies

Inspect web server access logs for requests to dynamic-url-seo plugin endpoints containing off-site Referer or Origin headers
Enable WordPress audit logging to capture plugin setting changes with timestamps and user attribution
Correlate administrator browsing activity with plugin state changes to identify anomalous request flows

Monitoring Recommendations

Deploy a web application firewall rule that enforces same-origin Referer validation for WordPress admin POST requests
Monitor outbound HTTP traffic from administrator workstations for connections to unrated or newly registered domains
Alert on plugin configuration modifications occurring without an active admin console session

How to Mitigate CVE-2025-23985

Immediate Actions Required

Deactivate and remove the Dynamic URL SEO plugin until a patched version is released by the vendor
Restrict WordPress admin access to trusted IP addresses through server or firewall rules
Require administrators to log out of WordPress sessions before browsing untrusted sites
Review plugin configuration and audit logs for unauthorized changes made prior to remediation

Patch Information

No patched version is referenced in the current advisory. Version 1.0 and all prior releases remain affected. Consult the Patchstack advisory for updates on vendor remediation.

Workarounds

Uninstall the dynamic-url-seo plugin and replace it with an actively maintained SEO plugin that implements CSRF protection
Configure a web application firewall to block cross-origin POST requests targeting /wp-admin/ endpoints associated with the plugin
Enforce browser isolation for WordPress administrators to prevent session reuse across arbitrary web browsing

bash

# Example WAF rule concept: block cross-origin POST to plugin endpoints
# ModSecurity pseudo-rule
SecRule REQUEST_METHOD "@streq POST" \
  "chain,deny,status:403,id:1002385,msg:'CSRF: cross-origin POST to dynamic-url-seo'"
  SecRule REQUEST_URI "@contains dynamic-url-seo" "chain"
    SecRule REQUEST_HEADERS:Referer "!@beginsWith https://your-site.example/"