CVE-2025-31010: SimplyRETS Real Estate IDX CSRF Vulnerability

CVE-2025-31010 Overview

CVE-2025-31010 is a Cross-Site Request Forgery (CSRF) vulnerability in the ReichertBrothers SimplyRETS Real Estate IDX plugin for WordPress. The flaw affects all plugin versions up to and including 3.0.5. An attacker can trick an authenticated administrator into submitting forged requests that trigger multiple administrative actions without consent. The vulnerability is tracked under CWE-352: Cross-Site Request Forgery.

Critical Impact
Successful exploitation lets a remote attacker execute administrative actions on a WordPress site by luring an authenticated user to a crafted page, potentially altering plugin configuration.

Affected Products

ReichertBrothers SimplyRETS Real Estate IDX plugin for WordPress
All versions from initial release through 3.0.5
WordPress installations exposing the plugin's administrative endpoints

Discovery Timeline

2025-03-28 - CVE-2025-31010 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-31010

Vulnerability Analysis

The SimplyRETS Real Estate IDX plugin exposes administrative actions that do not validate the origin of incoming requests. Because the endpoints lack anti-CSRF protections, a browser session belonging to a privileged user can be leveraged to submit state-changing requests. The Patchstack advisory categorizes the issue as CSRF to multiple admin actions, indicating several administrative operations are reachable through this class of attack. See the Patchstack WordPress Vulnerability Report for details.

Root Cause

The root cause is missing or improperly implemented CSRF protection on administrative handlers. WordPress plugins typically defend against CSRF using the wp_nonce_field() and check_admin_referer() primitives. Affected handlers in SimplyRETS versions up to 3.0.5 either omit nonce verification or fail to enforce it before executing the requested action.

Attack Vector

An attacker crafts a malicious web page or email containing an auto-submitting form or image tag that targets a vulnerable SimplyRETS admin endpoint. When an authenticated WordPress administrator visits the page while logged in, the browser attaches the session cookie and the server executes the admin action. User interaction is required only to visit the attacker-controlled resource. No authentication credentials need to be known by the attacker.

No verified public proof-of-concept code has been released. Refer to the Patchstack advisory for further technical context.

Detection Methods for CVE-2025-31010

Indicators of Compromise

Unexpected changes to SimplyRETS plugin settings or listing configurations without a corresponding admin activity log entry.
HTTP POST requests to plugin admin endpoints where the Referer header points to an external domain.
Administrator sessions that generate plugin configuration changes shortly after visiting untrusted URLs.

Detection Strategies

Inspect web server access logs for requests to /wp-admin/ handlers associated with the SimplyRETS plugin that lack a valid _wpnonce parameter.
Correlate administrator browsing history with plugin configuration change timestamps to identify suspicious cross-origin triggers.
Deploy a Web Application Firewall (WAF) rule that flags state-changing requests to plugin endpoints with off-site Referer or Origin headers.

Monitoring Recommendations

Enable WordPress audit logging for all plugin option updates and administrator-initiated actions.
Alert on new or modified rows in wp_options tied to the simply-rets option namespace.
Monitor egress from administrator workstations to unclassified or newly registered domains that may host CSRF payloads.

How to Mitigate CVE-2025-31010

Immediate Actions Required

Update the SimplyRETS Real Estate IDX plugin to a version newer than 3.0.5 once the vendor publishes a fixed release.
Restrict WordPress administrator access to dedicated browser sessions that are not used for general browsing.
Review recent plugin configuration changes and revert unauthorized modifications.

Patch Information

At the time of publication, no fixed version is listed in the referenced advisory. Administrators should monitor the Patchstack advisory and the plugin's WordPress.org page for a patched release addressing the missing nonce validation.

Workarounds

Deactivate the SimplyRETS Real Estate IDX plugin until a patched version is available if the affected admin actions are not required for business operations.
Enforce a strict Content Security Policy and SameSite=Lax or SameSite=Strict session cookies to reduce cross-site request risk.
Deploy a WAF rule that rejects state-changing requests to plugin admin endpoints when the Origin header does not match the site's own hostname.

bash

# Example ModSecurity rule to block cross-origin POSTs to SimplyRETS admin endpoints
SecRule REQUEST_METHOD "@streq POST" \
  "chain,id:1003101,phase:1,deny,status:403,msg:'CVE-2025-31010 CSRF block'"
  SecRule REQUEST_URI "@contains /wp-admin/" \
    "chain"
    SecRule ARGS_NAMES "@rx simply[-_]rets" \
      "chain"
      SecRule &REQUEST_HEADERS:Origin "@eq 0"