{"id":15220,"date":"2026-09-04T19:02:31","date_gmt":"2026-09-04T11:02:31","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53595"},"modified":"2026-09-04T19:02:31","modified_gmt":"2026-09-04T11:02:31","slug":"cve-2026-53595","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53595","title":{"rendered":"CVE-2026-53595 [CRITICAL] &#8211; FreeScout is a free help desk and shared inbox built with PHP&#8217;s Laravel framework. Prior t"},"content":{"rendered":"<p>FreeScout is a free help desk and shared inbox built with PHP&#8217;s Laravel framework. Prior to version 1.8.224, the public endpoint `POST \/user-setup\/{hash}\/{invite_sent_at}` (`OpenController@userSetupSave`) selects the target account solely by its `invite_hash` column, then overwrites that account&#8217;s email and password and logs in as it. No authentication, cookie, or prior session is required. After a user activates, FreeScout sets `invite_hash` to the empty string. On MySQL and MariaDB, `VARCHAR` equality ignores trailing spaces, so a single URL-encoded space (`%20`) matches the stored empty string and selects the lowest-id activated user. The expiry guard decrypts `invite_sent_at` with the target&#8217;s password hash, but `Helper::decrypt` returns its raw input unchanged when decryption fails. A plaintext numeric value such as `9999999999` therefore passes the time-to-live check without any secret. The result is that an anonymous attacker sets the email and password of the lowest-id activated FreeScout account (a support agent, or an administrator if one was added by invitation) and authenticates as that account. Version 1.8.224 contains a fix.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>FreeScout is a free help desk and shared inbox built with PHP&#8217;s Laravel framework. Prior to version 1.8.224, the public endpoint `POST \/user-setup\/{hash}\/{invite_sent_at}` (`OpenController@userSetupSa<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15220","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15220","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15220"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15220"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15220"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}