CVE-2025-31602: Apimo Connector CSRF Vulnerability

CVE-2025-31602 Overview

CVE-2025-31602 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the Apimo Connector plugin for WordPress, developed by Proptech. The flaw exists in all versions up to and including 2.6.5.1. An attacker can craft a malicious web page that, when visited by an authenticated administrator, triggers unauthorized settings changes on the target WordPress site. The vulnerability is categorized under CWE-352: Cross-Site Request Forgery and requires user interaction to succeed. Successful exploitation modifies plugin configuration without the administrator's consent.

Critical Impact
An unauthenticated remote attacker can alter Apimo Connector settings by luring an authenticated administrator to a malicious page, resulting in unauthorized configuration changes on affected WordPress sites.

Affected Products

Proptech Apimo Connector plugin for WordPress
All versions from n/a through 2.6.5.1
WordPress sites with the Apimo Connector plugin installed and active

Discovery Timeline

2025-03-31 - CVE-2025-31602 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-31602

Vulnerability Analysis

The Apimo Connector plugin fails to validate the origin and intent of state-changing HTTP requests. Administrative actions that modify plugin settings do not verify a valid anti-CSRF nonce or equivalent token. An attacker exploits this by hosting a crafted HTML page or embedding a request in an attacker-controlled resource. When an authenticated WordPress administrator visits the page, the browser automatically submits the forged request using the administrator's active session cookies. The target WordPress instance processes the request as legitimate and applies the settings change.

The attack requires no privileges on the target site because the request executes under the victim's authenticated session. Impact is limited to integrity because the vulnerability enables unauthorized modification but not direct data disclosure or service disruption.

Root Cause

The root cause is missing or improperly implemented CSRF protection on settings-handling endpoints within the plugin. WordPress provides wp_nonce_field() and check_admin_referer() helpers to prevent this class of issue, but the affected plugin versions do not enforce these checks on the vulnerable actions.

Attack Vector

Exploitation follows a standard web-based CSRF pattern. The attacker crafts a page containing an auto-submitting HTML form or a hidden request targeting the Apimo Connector settings endpoint on the victim's WordPress site. The attacker then delivers the URL through phishing, forum posts, or malicious advertising. When an administrator with an active WordPress session visits the URL, the browser submits the forged request with valid session cookies. The plugin processes the request and updates settings without further validation.

Refer to the Patchstack Security Vulnerability Report for additional technical context.

Detection Methods for CVE-2025-31602

Indicators of Compromise

Unexpected changes to Apimo Connector plugin settings in the WordPress admin dashboard
HTTP POST requests to Apimo Connector settings endpoints originating from external Referer headers
Administrator sessions performing settings changes shortly after visiting external links
WordPress audit log entries showing configuration updates without corresponding admin UI activity

Detection Strategies

Monitor web server access logs for POST requests to Apimo Connector admin endpoints where the Referer header points to an untrusted third-party domain
Deploy a Web Application Firewall (WAF) rule that flags state-changing requests to /wp-admin/ endpoints missing a valid WordPress nonce parameter
Enable and review WordPress activity logs to correlate settings changes with administrator browsing activity

Monitoring Recommendations

Ingest WordPress and web server logs into a centralized SIEM for correlation of admin actions and referer anomalies
Alert on modifications to plugin option rows in the wp_options table associated with Apimo Connector
Track administrator account behavior for unusual timing patterns between authentication and configuration changes

How to Mitigate CVE-2025-31602

Immediate Actions Required

Update the Apimo Connector plugin to a version later than 2.6.5.1 once the vendor publishes a fixed release
Deactivate the Apimo Connector plugin if a patched version is not yet available and the plugin is not business-critical
Require administrators to log out of WordPress sessions when not actively managing the site to reduce the exploitation window
Review recent plugin settings for unauthorized modifications and restore known-good values

Patch Information

At the time of NVD publication, the Patchstack advisory lists the vulnerability as affecting versions through 2.6.5.1. Site owners should monitor the WordPress plugin repository and vendor communications for a security release addressing CVE-2025-31602.

Workarounds

Deploy a WAF rule that blocks POST requests to Apimo Connector admin endpoints when the Referer header does not match the site's own domain
Restrict WordPress admin access by IP address using web server or reverse proxy configuration
Enforce SameSite=Strict or SameSite=Lax cookie attributes on WordPress session cookies where compatible
Train administrators to avoid clicking untrusted links while logged into the WordPress admin dashboard

bash

# Example nginx rule to block cross-origin POSTs to WordPress admin endpoints
location ~ ^/wp-admin/admin-post\.php {
    if ($http_referer !~* "^https?://your-site\.example/") {
        return 403;
    }
}