CVE-2026-1233: WordPress TTS Plugin Info Disclosure Flaw

CVE-2026-1233 Overview

The Text to Speech for WP (AI Voices by Mementor) plugin for WordPress contains a critical security vulnerability involving hardcoded MySQL database credentials. All versions up to and including 1.9.8 are affected by this sensitive information exposure flaw. The vulnerability exists within the Mementor_TTS_Remote_Telemetry class, where hardcoded MySQL database credentials for the vendor's external telemetry server are embedded directly in the plugin code. This allows unauthenticated attackers to extract and decode these credentials, gaining unauthorized write access to the vendor's telemetry database.

Critical Impact

Unauthenticated attackers can extract hardcoded MySQL credentials from the plugin source code, enabling unauthorized write access to the vendor's external telemetry database. This exposes sensitive telemetry data and creates potential for supply chain attacks.

Affected Products

• Text to Speech for WP (AI Voices by Mementor) plugin for WordPress versions up to and including 1.9.8
• WordPress installations with the affected plugin versions installed
• Vendor telemetry infrastructure connected to affected deployments

Discovery Timeline

• 2026-04-04 - CVE-2026-1233 published to NVD
• 2026-04-07 - Last updated in NVD database

Technical Details for CVE-2026-1233

Vulnerability Analysis

This vulnerability is classified under CWE-798 (Use of Hard-coded Credentials), representing a fundamental secure coding violation. The Mementor_TTS_Remote_Telemetry class within the WordPress plugin contains embedded MySQL database credentials intended for connecting to an external vendor-operated telemetry server. Because these credentials are hardcoded directly into the plugin's PHP source code, any attacker with access to the plugin files—which are publicly distributed through the WordPress plugin repository—can extract and decode these credentials without any authentication requirements.

The exposure occurs because the plugin developers embedded connection strings or credential variables directly in the codebase rather than utilizing secure credential management practices such as environment variables, secure vaults, or server-side configuration files with appropriate access controls. Once extracted, these credentials provide direct database access capabilities to the vendor's telemetry infrastructure.

Root Cause

The root cause of this vulnerability is the use of hardcoded credentials (CWE-798) within the plugin's source code. The developers embedded MySQL database connection credentials directly in the Mementor_TTS_Remote_Telemetry class rather than implementing secure credential storage mechanisms. This practice violates fundamental secure coding principles and creates a persistent exposure that cannot be mitigated by end users without vendor intervention.

Attack Vector

The attack vector is network-based and requires no user interaction or prior authentication. An attacker can obtain the plugin source code either by downloading it from the WordPress plugin repository or by accessing a vulnerable WordPress installation. The attack sequence involves:

1. Obtaining the plugin source code through legitimate download or directory traversal
2. Locating the Mementor_TTS_Remote_Telemetry class within the plugin files
3. Extracting the embedded MySQL credentials (which may be obfuscated but not encrypted)
4. Decoding any obfuscation applied to the credentials
5. Using the extracted credentials to establish a connection to the vendor's telemetry database
6. Performing unauthorized database operations with write access

The vulnerability requires no authentication and can be exploited remotely over the network. For more technical details, see the Wordfence Vulnerability Report.

Detection Methods for CVE-2026-1233

Indicators of Compromise

• Unexpected outbound connections to unfamiliar MySQL database servers from WordPress installations
• Evidence of credential extraction attempts in web server access logs targeting plugin PHP files
• Anomalous database queries or connections originating from unknown IP addresses to the vendor's telemetry infrastructure
• File access patterns indicating automated scanning or extraction of plugin source files

Detection Strategies

• Monitor WordPress plugin directories for unauthorized access to the Text to Speech for WP plugin files, particularly the telemetry class
• Implement file integrity monitoring on WordPress plugin directories to detect scanning or extraction attempts
• Review web server logs for patterns indicating automated credential harvesting from plugin source code
• Deploy network monitoring to identify unexpected MySQL connection attempts to external servers

Monitoring Recommendations

• Enable detailed logging for WordPress file access and plugin directory operations
• Configure alerts for outbound MySQL connections to non-standard destinations
• Implement SentinelOne endpoint protection to monitor for suspicious PHP file access patterns and credential extraction behaviors
• Utilize SentinelOne's behavioral AI to detect post-exploitation activity that may follow credential theft

How to Mitigate CVE-2026-1233

Immediate Actions Required

• Update the Text to Speech for WP (AI Voices by Mementor) plugin to a patched version immediately
• Review WordPress installations for the presence of vulnerable plugin versions (1.9.8 and earlier)
• Audit network logs for any evidence of exploitation or unauthorized database connections
• Consider temporarily disabling the plugin if an update is not immediately available

Patch Information

A patch has been released by the plugin developers. The fix can be reviewed in the WordPress TTS Plugin Change Log. Organizations should update to the latest available version of the plugin that removes or properly secures the hardcoded credentials. After updating, verify that the Mementor_TTS_Remote_Telemetry class no longer contains embedded credentials by reviewing the updated source code.

Workarounds

• If immediate patching is not possible, consider deactivating and removing the plugin until a secure version is available
• Implement web application firewall rules to restrict access to plugin PHP files from unauthorized sources
• Block outbound MySQL connections from the WordPress server to untrusted external database servers at the network level
• Monitor the vendor's security advisories through the Wordfence Vulnerability Report for additional guidance

# WordPress CLI command to check installed plugin version
wp plugin list --status=active --format=table | grep text-to-speech-tts

# Update the plugin to latest version
wp plugin update text-to-speech-tts

# Verify plugin version after update
wp plugin get text-to-speech-tts --field=version