The Demi – One Click Demo Import, WP Backup & Site Migration plugin for WordPress is vulnerable to Arbitrary Directory Deletion in all versions up to, and including, 0.0.7. The vulnerability exists because the plugin stores its HMAC signing key and per-step restore token as dotfiles inside a publicly accessible subdirectory of the WordPress uploads folder — without any `.htaccess` or index file protection — and the `demi_restore_step` AJAX handler, registered for unauthenticated callers, explicitly accepts possession of the on-disk signing key as a standalone alternative to WordPress capability and nonce checks; an unauthenticated attacker who retrieves the exposed key can forge a valid signed state envelope to invoke `CleanDir::execute()` with a caller-supplied absolute path that is subject to no allow-list or path-canonicalization check. This makes it possible for unauthenticated attackers to recursively delete arbitrary directories on the server.
Demi <= 0.0.6 - Unauthenticated Arbitrary Directory Deletion via demi_restore_step AJAX action
Problem type
Affected products
deveasel
<= 0.0.7 - AFFECTED
References
https://www.wordfence.com/threat-intel/vulnerabilities/id/63922c28-0cb5-4abe-85ee-20b2cc6f015d?source=cve
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Backup/Tasks/CleanDir.php#L61
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Import/Manager.php#L767
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Import/Manager.php#L50
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Import/Manager.php#L287
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Backup/Tasks/CleanDir.php#L61
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Import/Manager.php#L767
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Import/Manager.php#L50
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Import/Manager.php#L287
https://plugins.trac.wordpress.org/changeset?reponame=&old=3616690%40demi-backup-migration&new=3616690%40demi-backup-migration
GitHub Security Advisories
GHSA-8mj8-7gxm-p63p
The Demi – One Click Demo Import, WP Backup & Site Migration plugin for WordPress is vulnerable...
https://github.com/advisories/GHSA-8mj8-7gxm-p63pThe Demi – One Click Demo Import, WP Backup & Site Migration plugin for WordPress is vulnerable to Arbitrary Directory Deletion in all versions up to, and including, 0.0.7. The vulnerability exists because the plugin stores its HMAC signing key and per-step restore token as dotfiles inside a publicly accessible subdirectory of the WordPress uploads folder — without any .htaccess or index file protection — and the demi_restore_step AJAX handler, registered for unauthenticated callers, explicitly accepts possession of the on-disk signing key as a standalone alternative to WordPress capability and nonce checks; an unauthenticated attacker who retrieves the exposed key can forge a valid signed state envelope to invoke CleanDir::execute() with a caller-supplied absolute path that is subject to no allow-list or path-canonicalization check. This makes it possible for unauthenticated attackers to recursively delete arbitrary directories on the server.
https://nvd.nist.gov/vuln/detail/CVE-2026-14490
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Backup/Tasks/CleanDir.php#L61
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Import/Manager.php#L287
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Import/Manager.php#L50
https://plugins.trac.wordpress.org/browser/demi-backup-migration/tags/0.0.6/classes/Import/Manager.php#L767
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Backup/Tasks/CleanDir.php#L61
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Import/Manager.php#L287
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Import/Manager.php#L50
https://plugins.trac.wordpress.org/browser/demi-backup-migration/trunk/classes/Import/Manager.php#L767
https://plugins.trac.wordpress.org/changeset?reponame=&old=3616690%40demi-backup-migration&new=3616690%40demi-backup-migration
https://www.wordfence.com/threat-intel/vulnerabilities/id/63922c28-0cb5-4abe-85ee-20b2cc6f015d?source=cve
https://github.com/advisories/GHSA-8mj8-7gxm-p63p
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-14490Click to expand
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