CVE-2026-53593 FreeScout Vulnerable to Authenticated Remote Code Execution via incomplete upload extension denylist (.pht) — bypass of CVE-2025-48471

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the denylist that neutralizes dangerous file uploads Helper::$restrictedextensions is incomplete: it does not cover the .pht extension. The authenticated upload endpoint POST /uploads/uplo...

EUVD-2026-46083

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the denylist that neutralizes dangerous file uploads Helper::$restrictedextensions is incomplete: it does not cover the .pht extension. The authenticated upload endpoint POST /uploads/uplo...

CVE-2026-53592

CVE-2026-53592 affects FreeScout (Laravel-based). A prototype pollution flaw in the frontend JavaScript function getQueryParam (/public/js/main.js) allows attacker-controlled URL query strings to write into Object.prototype. Initial fix in 1.8.139 blocked top-level proto keys but did not sanitize...

CVE-2026-53592 FreeScout vulnerable to prototype pollution in getQueryParam

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A Prototype Pollution condition in the getQueryParam function /public/js/main.js and was addressed in version 1.8.139 by blocking URL query keys matching the pattern proto. However, this mitigation is incomplete: i...

CVE-2026-53591

FreeScout (Laravel-based) prior to v1.8.223 is vulnerable: an unauthenticated attacker can inject messages into existing conversations by sending an email to the public address with a crafted In-Reply-To header. The injected message appears as a legitimate customer reply, reopens the conversation...

EUVD-2026-46081

FreeScout is a free help desk and shared inbox built with PHP'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's public address with a crafted In-Reply-To header. No...

CVE-2026-53591 FreeScout Vulnerable to Unauthenticated Conversation Thread Injection via HMAC Length Bypass in FetchEmails

FreeScout is a free help desk and shared inbox built with PHP'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's public address with a crafted In-Reply-To header. No...

CVE-2026-53591 FreeScout Vulnerable to Unauthenticated Conversation Thread Injection via HMAC Length Bypass in FetchEmails

FreeScout is a free help desk and shared inbox built with PHP'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's public address with a crafted In-Reply-To header. No...

CVE-2026-45295

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.219, the open tracking endpoint GET /thread/read/conversationid/threadid allows unauthenticated attackers to enumerate valid conversation and thread IDs, and modify thread state openedat...

CVE-2026-48812 FreeScout Allows Unauthenticated Access to Legacy Attachment Files

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.221, FreeScout's attachment download route skips token authentication for any attachment whose tokentype is set to 1 TOKENTYPELEGACY. Because this route is unauthenticated and the file path is...

EUVD-2026-46044

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.221, FreeScout's attachment download route skips token authentication for any attachment whose tokentype is set to 1 TOKENTYPELEGACY. Because this route is unauthenticated and the file path is...

CVE-2026-48812

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.221, FreeScout's attachment download route skips token authentication for any attachment whose tokentype is set to 1 TOKENTYPELEGACY. Because this route is unauthenticated and the file path is...

CVE-2026-48812 FreeScout Allows Unauthenticated Access to Legacy Attachment Files

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.221, FreeScout's attachment download route skips token authentication for any attachment whose tokentype is set to 1 TOKENTYPELEGACY. Because this route is unauthenticated and the file path is...

CVE-2026-48812 FreeScout Allows Unauthenticated Access to Legacy Attachment Files

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.221, FreeScout's attachment download route skips token authentication for any attachment whose tokentype is set to 1 TOKENTYPELEGACY. Because this route is unauthenticated and the file path is...

CVE-2026-48812

The CVE refers to FreeScout (Laravel-based help desk) prior to version 1.8.221. The vulnerability is that the attachment download route skipped token authentication for attachments with token_type = 1 (TOKEN_TYPE_LEGACY), making the route unauthenticated. Because the file path is deterministic, a...

CVE-2026-45295 FreeScout Vulnerable to Unauthenticated Thread Read-Status Manipulation and Conversation Enumeration via Open Tracking Endpoint

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.219, the open tracking endpoint GET /thread/read/conversationid/threadid allows unauthenticated attackers to enumerate valid conversation and thread IDs, and modify thread state openedat...

CVE-2026-45295 FreeScout Vulnerable to Unauthenticated Thread Read-Status Manipulation and Conversation Enumeration via Open Tracking Endpoint

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.219, the open tracking endpoint GET /thread/read/conversationid/threadid allows unauthenticated attackers to enumerate valid conversation and thread IDs, and modify thread state openedat...

CVE-2026-45295

FreeScout (PHP/Laravel) before version 1.8.219 is vulnerable via the open tracking endpoint GET /thread/read/{conversation_id}/{thread_id}, allowing unauthenticated users to enumerate valid conversation and thread IDs and to modify the thread’s opened_at timestamp. The issue is fixed in 1.8.219. ...

CVE-2026-45295 FreeScout Vulnerable to Unauthenticated Thread Read-Status Manipulation and Conversation Enumeration via Open Tracking Endpoint

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.219, the open tracking endpoint GET /thread/read/conversationid/threadid allows unauthenticated attackers to enumerate valid conversation and thread IDs, and modify thread state openedat...

PT-2026-61666

Name of the Vulnerable Software and Affected Versions FreeScout versions prior to 1.8.219 Description An issue exists in the open tracking endpoint GET /thread/read/conversation id/thread id that allows unauthenticated attackers to enumerate valid conversation and thread IDs. Additionally, this...