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The VikRentCar Car Rental Management System plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.4.8. This is due to missing or incorrect nonce validation on the condtext_update_tmpl function. This makes it possible for unauthenticated attackers to write arbitrary PHP code to the plugin's executable template files such as site/helpers/email_tmpl.php, which are later include()d by loadEmailTemplate() and loadPdfTemplate(), achieving remote code execution on the server via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. The injected PHP payload bypasses sanitization because the plugin's own __PHP_OPEN__/__PHP_CLOSE__ placeholder expansion and cleanPHPSourceCode() logic explicitly reverse both sanitize_text_field filtering and saveHTML() HTML-encoding, restoring a literal <?php...?> payload to live PHP before it is written to disk. Successful exploitation additionally requires an action by an administrator — the attacker cannot trigger the vulnerability on their own.

• https://www.wordfence.com/threat-intel/vulnerabilities/id/36f84246-6658-407a-88dd-4b99a784e682?source=cve
• https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.8/admin/controller.php#L9609
• https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.8/admin/controller.php#L9558
• https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.8/admin/helpers/conditional_rules.php#L1003
• https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.8/admin/helpers/conditional_rules.php#L765
• https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.8/admin/helpers/conditional_rules.php#L654
• https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.8/site/helpers/lib.vikrentcar.php#L2685
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3755596%40vikrentcar&new=3755596%40vikrentcar