WordPress Mail Logger Exposes Admin Password Reset Keys

The Mail logging & Catcher plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.2.0 via the 'message' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract valid administrator password-reset keys from stored email logs and complete the WordPress password-reset flow to escalate privileges to administrator. Exploitation requires an administrator to have previously configured the plugin's default_view_role setting to a capability held by low-privileged users such as 'read'; on an untouched install the default of 'manage_options' restricts log access to administrators only.

Casky was already ahead

This CVE exploits attack patterns that Casky's 224matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

The Mail Logging & Catcher plugin for WordPress contains a sensitive information exposure vulnerability that allows authenticated subscribers and above to extract administrator password-reset keys from stored email logs. By manipulating the 'message' parameter, attackers can access plaintext reset tokens that grant them the ability to complete the password-reset flow and escalate privileges to administrator level. This vulnerability is particularly dangerous because it requires only subscriber-level access—a low-privilege account that's often easier to compromise—yet enables complete account takeover of the most powerful role in WordPress installations. Any WordPress site using this plugin up to version 2.2.0 is at risk if administrators have configured email logging features.

Casky's 224 mapped skills detect the attack patterns behind this vulnerability by analyzing techniques under TA0004 (Privilege Escalation). Practitioners using Casky would identify findings related to CWE-269 (improper access control) through Claude's extended reasoning, which correlates parameter tampering on the 'message' field with unauthorized data retrieval. The platform would flag suspicious access patterns where low-privilege accounts query email logs containing sensitive reset tokens, matching behaviors associated with credential access and lateral movement. Security teams would see detections highlighting the chain from initial authentication bypass through information exposure to privilege escalation, enabling them to prioritize remediation and implement compensating controls like enhanced logging, access restrictions on the plugin's functionality, or immediate updates to patched versions.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

224 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-120040.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004

Investigate the attack patterns behind CVE-2026-120040

Casky has 224 skills that investigate the attack patterns behind CVE-2026-120040. Run one and get CVSS-scored findings in 3 minutes.

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