Summary
The Mail logging & Catcher plugin for WordPress can expose administrator password-reset keys through stored email logs when low-privileged users are allowed to view those logs. An authenticated user with subscriber-level access or higher may use a recovered key to complete the password-reset process and gain administrator privileges.
The Mail logging & Catcher plugin for WordPress can expose administrator password-reset keys through stored email logs when low-privileged users are allowed to view those logs. An authenticated user with subscriber-level access or higher may use a recovered key to complete the password-reset process and gain administrator privileges.
Affected context
The issue occurs in WordPress installations using the Mail logging & Catcher plugin when its default_view_role setting grants log-viewing access to low-privileged users, such as those with the read capability. The risk is reduced when access remains restricted to administrators through a capability such as manage_options, although stored sensitive messages should still be treated as protected data.
The issue occurs in WordPress installations using the Mail logging & Catcher plugin when its default_view_role setting grants log-viewing access to low-privileged users, such as those with the read capability. The risk is reduced when access remains restricted to administrators through a capability such as manage_options, although stored sensitive messages should still be treated as protected data.
Exploit preconditions
- Attack surface: The plugin's stored email log viewing functionality
- Required access: An authenticated account with subscriber-level access or higher
- Configuration requirement: The plugin's
default_view_rolemust permit the account to view logged messages - Trigger point: Retrieval of an administrator password-reset message from the email logs
- Why exploitation is possible: Valid password-reset keys are exposed to users who should not be able to access them, enabling the normal password-reset flow to be applied to an administrator account
- Attack surface: The plugin's stored email log viewing functionality
- Required access: An authenticated account with subscriber-level access or higher
- Configuration requirement: The plugin's
default_view_rolemust permit the account to view logged messages - Trigger point: Retrieval of an administrator password-reset message from the email logs
- Why exploitation is possible: Valid password-reset keys are exposed to users who should not be able to access them, enabling the normal password-reset flow to be applied to an administrator account
Why this happens
The underlying flaw is improper privilege management: access to stored email messages is governed by a role or capability configuration that may be broader than the sensitivity of the data being displayed. Because password-reset messages can contain valid administrator reset keys, exposing them to low-privileged users crosses a security boundary and permits privilege escalation. This behavior maps to CWE-269, where authorization controls fail to enforce the privileges required for a sensitive operation.
The underlying flaw is improper privilege management: access to stored email messages is governed by a role or capability configuration that may be broader than the sensitivity of the data being displayed. Because password-reset messages can contain valid administrator reset keys, exposing them to low-privileged users crosses a security boundary and permits privilege escalation. This behavior maps to CWE-269, where authorization controls fail to enforce the privileges required for a sensitive operation.
Potential impact
- An attacker may obtain valid administrator password-reset keys
- An attacker could reset an administrator account password
- An attacker may gain administrator-level access to the WordPress site
- Site content, users, plugins, or configuration could be modified
- The compromise could facilitate further data exposure or persistence
- An attacker may obtain valid administrator password-reset keys
- An attacker could reset an administrator account password
- An attacker may gain administrator-level access to the WordPress site
- Site content, users, plugins, or configuration could be modified
- The compromise could facilitate further data exposure or persistence
General mitigation guidance
Mitigation generally focuses on enforcing least privilege for email-log access and treating password-reset messages as highly sensitive data.
Common defensive patterns include:
- Restricting log viewing to trusted administrators or an explicitly authorized support role
- Avoiding role settings that expose message contents to broad or low-privileged audiences
- Applying capability checks server-side for every log access request
- Reducing retention of messages containing credentials, tokens, or reset links
- Redacting or excluding sensitive reset content from application logs where feasible
- Auditing existing roles and capabilities for unintended access
- Requiring strong authentication and least privilege for administrative accounts
Mitigation generally focuses on enforcing least privilege for email-log access and treating password-reset messages as highly sensitive data.
Common defensive patterns include:
- Restricting log viewing to trusted administrators or an explicitly authorized support role
- Avoiding role settings that expose message contents to broad or low-privileged audiences
- Applying capability checks server-side for every log access request
- Reducing retention of messages containing credentials, tokens, or reset links
- Redacting or excluding sensitive reset content from application logs where feasible
- Auditing existing roles and capabilities for unintended access
- Requiring strong authentication and least privilege for administrative accounts
How teams detect issues like this
Detection can include:
- Reviewing the plugin's role and capability configuration for access granted to subscriber-level users
- Auditing authorization checks around email-log listing and message-detail endpoints
- Using static analysis to identify sensitive data returned without capability enforcement
- Searching access logs for low-privileged accounts viewing password-reset messages
- Monitoring password-reset activity and administrative account changes following log access
- Enforcing policy checks that prevent credentials, reset tokens, and similar secrets from being stored in broadly accessible logs
Detection can include:
- Reviewing the plugin's role and capability configuration for access granted to subscriber-level users
- Auditing authorization checks around email-log listing and message-detail endpoints
- Using static analysis to identify sensitive data returned without capability enforcement
- Searching access logs for low-privileged accounts viewing password-reset messages
- Monitoring password-reset activity and administrative account changes following log access
- Enforcing policy checks that prevent credentials, reset tokens, and similar secrets from being stored in broadly accessible logs
Sources
| Source | Link |
|---|---|
| github. | github.com/ |
| plugins. | plugins.trac.wordpress.org/ |
| plugins. | plugins.trac.wordpress.org/ |
| plugins. | plugins.trac.wordpress.org/ |
| plugins. | plugins.trac.wordpress.org/ |
| plugins. | plugins.trac.wordpress.org/ |
| wordfence. | wordfence.com/ |
