CVE-2026-48811
FreeScout: Thread Deletion Bypasses Mailbox Access Revocation
Description
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.221, FreeScout allows a non-admin user to permanently delete an internal note (private thread) from any conversation, even after that user's access to the mailbox containing the conversation has been revoked. The ThreadPolicy::delete authorization policy does not verify mailbox membership, so a former team member retains destructive write access to notes they created. This vulnerability is fixed in 1.8.221.
INFO
Published Date :
May 29, 2026, 8:16 p.m.
Last Modified :
July 22, 2026, 6:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update FreeScout to version 1.8.221 or later.
- Verify user access controls are properly enforced.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-48811.
| URL | Resource |
|---|---|
| https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9vx8-gx3p-9mh6 | |
| https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9vx8-gx3p-9mh6 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-48811 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-48811
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-48811 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-48811 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added Translation Title: freescout de freescout-help-desk, Description: FreeScout es una mesa de ayuda gratuita y una bandeja de entrada compartida construido con el framework Laravel de PHP. Previo a la 1.8.221, FreeScout permite a un usuario no administrador eliminar permanentemente una nota interna (hilo privado) de cualquier conversación, incluso después de que el acceso de ese usuario al buzón que contiene la conversación haya sido revocado. La política de autorización ThreadPolicy::delete no verifica la pertenencia al buzón, por lo que un antiguo miembro del equipo retiene acceso de escritura destructivo a las notas que creó. Esta vulnerabilidad está corregida en la 1.8.221. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'freescout-help-desk', 'product': 'freescout', 'versions': [{'status': 'affected', 'version': '< 1.8.221'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-48811', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-01T15:15:00.790272Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 01, 2026
Action Type Old Value New Value Added Reference https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9vx8-gx3p-9mh6 -
New CVE Received by [email protected]
May. 29, 2026
Action Type Old Value New Value Added Description FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.221, FreeScout allows a non-admin user to permanently delete an internal note (private thread) from any conversation, even after that user's access to the mailbox containing the conversation has been revoked. The ThreadPolicy::delete authorization policy does not verify mailbox membership, so a former team member retains destructive write access to notes they created. This vulnerability is fixed in 1.8.221. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-862 Added Reference https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9vx8-gx3p-9mh6