CVE-2025-47540: Wedevs weMail Information Disclosure Flaw

CVE-2025-47540 Overview

CVE-2025-47540 is an information disclosure vulnerability affecting the weDevs weMail plugin for WordPress. The flaw allows unauthenticated attackers to retrieve embedded sensitive data over the network. It is classified under [CWE-497] as Exposure of Sensitive System Information to an Unauthorized Control Sphere. All versions of weMail up to and including 1.14.13 are affected. The issue was published to the National Vulnerability Database (NVD) on May 7, 2025. Because exploitation requires no authentication, user interaction, or elevated privileges, any WordPress site running a vulnerable weMail installation is exposed to passive data extraction by remote actors.

Critical Impact
Unauthenticated remote attackers can retrieve sensitive embedded data from vulnerable weMail installations without user interaction.

Affected Products

weDevs weMail plugin for WordPress
All versions from initial release through 1.14.13
WordPress sites with weMail installed and active

Discovery Timeline

2025-05-07 - CVE-2025-47540 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-47540

Vulnerability Analysis

The weMail plugin embeds sensitive system information in a location accessible to unauthorized control spheres. An unauthenticated remote attacker can issue network requests to the WordPress instance and retrieve data that should remain restricted. The vulnerability is mapped to [CWE-497], which covers cases where sensitive information is included in resources accessible to actors outside the intended trust boundary. The confidentiality impact is rated high, while integrity and availability are not affected, indicating the flaw is purely a disclosure issue rather than a code execution or tampering vector.

Root Cause

The root cause is improper segregation of sensitive data within the weMail plugin. Information that should be restricted to administrative or authenticated contexts is reachable through endpoints or resources that lack adequate access controls. The flaw exists in all weMail releases through 1.14.13, indicating the exposed surface was present across the plugin's release history.

Attack Vector

The attack vector is network-based and requires no privileges or user interaction. An attacker sends crafted HTTP requests directly to the WordPress site hosting the vulnerable plugin. The response discloses embedded sensitive information such as configuration data, credentials, or internal system details. Public proof-of-concept code is not currently available in exploit databases, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The Patchstack advisory provides additional technical context for defenders. See the Patchstack weMail Plugin Vulnerability advisory for further details.

Detection Methods for CVE-2025-47540

Indicators of Compromise

Unexpected HTTP requests to weMail plugin endpoints from unknown external IP addresses
Repeated unauthenticated requests targeting weMail-specific paths under /wp-content/plugins/wemail/
Anomalous outbound responses containing configuration values, API keys, or internal identifiers

Detection Strategies

Inventory WordPress installations and identify any running weMail version at or below 1.14.13
Review web server access logs for unauthenticated requests to weMail endpoints returning large or sensitive payloads
Deploy web application firewall (WAF) rules to flag requests targeting known weMail resource paths

Monitoring Recommendations

Forward WordPress and web server logs to a centralized analytics platform for correlation
Alert on response bodies from weMail endpoints that contain patterns matching credentials, tokens, or configuration markers
Monitor for plugin version drift and unauthorized configuration changes on WordPress hosts

How to Mitigate CVE-2025-47540

Immediate Actions Required

Identify all WordPress sites running weMail and confirm the installed version
Update weMail to a release later than 1.14.13 as soon as a fixed version is published by weDevs
Rotate any credentials, API keys, or tokens that may have been embedded within the plugin configuration

Patch Information

The vulnerability affects weMail versions through 1.14.13. Administrators should consult the Patchstack weMail Plugin Vulnerability advisory and the official weDevs plugin repository for the latest patched release and apply the update across all affected WordPress instances.

Workarounds

Disable and remove the weMail plugin until a patched version is installed
Restrict access to WordPress plugin endpoints using web server access control lists or WAF policies
Place WordPress administrative interfaces behind a reverse proxy that enforces authentication for sensitive paths

bash

# Configuration example: restrict weMail plugin paths at the web server
location ~* /wp-content/plugins/wemail/ {
    allow 10.0.0.0/8;
    deny all;
}