The Simple History plugin for WordPress is vulnerable to sensitive data exposure via Detective Mode due to improper sanitization within the append_debug_info_to_context() function in versions prior to 5.8.1. When Detective Mode is enabled, the plugin’s logger captures the entire contents of $_POST (and sometimes raw request bodies or $_GET) without redacting any password‐related keys. As a result, whenever a user submits a login form, whether via native wp_login or a third‐party login widget, their actual password is written in clear text into the logs. An authenticated attacker or any user whose actions generate a login event will have their password recorded; an administrator (or anyone with database read access) can then read those logs and retrieve every captured password.

References

• https://nvd.nist.gov/vuln/detail/CVE-2025-5760
• bonny/WordPress-Simple-History#546
• bonny/WordPress-Simple-History@68eab0c
• https://plugins.trac.wordpress.org/changeset/3267487
• https://simple-history.com/support/detective-mode
• https://wordpress.org/plugins/simple-history/#developers
• https://wordpress.org/support/topic/security-vulnerability-passwords-stored-as-plain-text-in-logs
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b6364415-da02-4236-b635-d8fbd27faa33?source=cve