{"id":15209,"date":"2026-09-04T19:02:30","date_gmt":"2026-09-04T11:02:30","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53591"},"modified":"2026-09-04T19:02:30","modified_gmt":"2026-09-04T11:02:30","slug":"cve-2026-53591","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53591","title":{"rendered":"CVE-2026-53591 [HIGH] &#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 1.8.223, an unauthenticated attacker can inject messages into any existing support conversation by sending a single email to the helpdesk&#8217;s public address with a crafted `In-Reply-To` header. No credentials, tokens, or prior access are required. The injected message is rendered in the agent UI as a legitimate customer reply, the conversation is automatically reopened, and the `last_reply_from` field is set to the attacker&#8217;s identity. Version 1.8.223 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 1.8.223, an unauthenticated attacker can inject messages into any existing support conversation by s<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15209","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15209","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=15209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}