CVE-2025-31045: Elfsight Contact Form Data Exposure Flaw

CVE-2025-31045 Overview

CVE-2025-31045 is a sensitive information disclosure vulnerability in the Elfsight Contact Form widget plugin for WordPress. The flaw is classified as Exposure of Sensitive System Information to an Unauthorized Control Sphere [CWE-497]. It affects all versions of the elfsight-contact-form plugin up to and including 2.3.1.

The vulnerability allows an unauthenticated remote attacker to retrieve embedded sensitive data from affected WordPress installations. Exploitation requires no privileges or user interaction and is conducted over the network.

Critical Impact
Unauthenticated network-based access to sensitive embedded data managed by the Elfsight Contact Form widget, enabling reconnaissance and follow-on attacks against affected WordPress sites.

Affected Products

Elfsight Contact Form widget for WordPress (elfsight-contact-form)
All versions from initial release through 2.3.1
WordPress sites running the vulnerable plugin

Discovery Timeline

2025-06-09 - CVE-2025-31045 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-31045

Vulnerability Analysis

The Elfsight Contact Form widget exposes sensitive system information to an unauthorized control sphere. An unauthenticated attacker can interact with the plugin over the network and retrieve embedded data that should not be accessible outside the application boundary.

The issue maps to [CWE-497], which describes scenarios where a product exposes system-level data to actors outside the intended trust boundary. In this case, the plugin returns data that can include configuration values, identifiers, or other embedded sensitive content used internally by the widget.

The EPSS score for this issue is 0.307% with a percentile of 53.991, indicating moderate predicted exploitation likelihood relative to all scored CVEs. No public proof-of-concept code is currently linked in vendor advisories, and the issue is not listed in the CISA Known Exploited Vulnerabilities catalog.

Root Cause

The root cause is improper restriction of access to embedded sensitive data within the plugin's request handling logic. The plugin returns data in responses without enforcing authentication, authorization, or filtering of fields intended to remain server-side. Versions up to 2.3.1 lack the controls necessary to scope responses to authorized callers only.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker sends crafted HTTP requests to plugin endpoints exposed by a WordPress site running a vulnerable version. The server responds with embedded sensitive data that the attacker can harvest for reconnaissance, credential discovery, or pivoting to additional attacks. Refer to the Patchstack Security Advisory for technical details on the affected endpoints.

Detection Methods for CVE-2025-31045

Indicators of Compromise

Unauthenticated HTTP GET or POST requests targeting elfsight-contact-form plugin endpoints under /wp-content/plugins/elfsight-contact-form/ or related REST routes.
Outbound responses from WordPress containing configuration identifiers, API keys, or internal widget data fields.
Repeated requests from a single source enumerating plugin URLs, suggestive of automated scanning.

Detection Strategies

Inspect web server access logs for requests to the elfsight-contact-form plugin path and flag anomalous volumes or User-Agent strings.
Deploy a Web Application Firewall (WAF) rule that monitors plugin endpoints for unauthenticated access patterns and suspicious response sizes.
Compare installed plugin version against 2.3.1 across managed WordPress sites and flag any version less than or equal to that release.

Monitoring Recommendations

Enable verbose HTTP request logging on WordPress front-end servers and forward logs to a centralized analytics platform.
Monitor outbound response payloads from wp-admin/admin-ajax.php and plugin REST routes for unexpected sensitive field names.
Alert on plugin version inventory drift that reintroduces elfsight-contact-form versions at or below 2.3.1.

How to Mitigate CVE-2025-31045

Immediate Actions Required

Identify all WordPress sites running elfsight-contact-form and inventory the installed version.
Update the plugin to a release later than 2.3.1 as soon as a fixed version is published by Elfsight.
If no fixed version is available, disable or remove the plugin until a patch is released.
Rotate any credentials, API keys, or tokens that may have been embedded within the plugin configuration.

Patch Information

No fixed version is identified in the NVD record at the time of publication. The vulnerability affects all versions through 2.3.1. Consult the Patchstack Security Advisory for vendor updates and patched release information.

Workarounds

Deactivate and remove the elfsight-contact-form plugin until a vendor patch becomes available.
Restrict access to plugin endpoints using WAF rules that block unauthenticated requests to widget data paths.
Replace the contact form with an alternative plugin maintained by a different vendor and not affected by this CVE.

bash

# WP-CLI commands to inventory and remove the vulnerable plugin
wp plugin list --name=elfsight-contact-form --fields=name,status,version
wp plugin deactivate elfsight-contact-form
wp plugin uninstall elfsight-contact-form