
CVE-2023-27264 – IDOR: Updating a playbook via the Playbooks API
https://notcve.org/view.php?id=CVE-2023-27264
27 Feb 2023 — A missing permissions check in Mattermost Playbooks in Mattermost allows an attacker to modify a playbook via the /plugins/playbooks/api/v0/playbooks/[playbookID] API. • https://mattermost.com/security-updates • CWE-862: Missing Authorization •

CVE-2023-27263 – IDOR: Accessing playbook runs via the Playbooks Runs API
https://notcve.org/view.php?id=CVE-2023-27263
27 Feb 2023 — A missing permissions check in the /plugins/playbooks/api/v0/runs API in Mattermost allows an attacker to list and view playbooks belonging to a team they are not a member of. • https://mattermost.com/security-updates • CWE-862: Missing Authorization •

CVE-2022-4044 – Authenticated user could send multiple requests containing a large Auto Responder Message payload and can crash a Mattermost server
https://notcve.org/view.php?id=CVE-2022-4044
23 Nov 2022 — A denial-of-service vulnerability in Mattermost allows an authenticated user to crash the server via multiple large autoresponder messages. Una vulnerabilidad de Denegación de Servicio (DoS) en Mattermost permite que un usuario autenticado bloquee el servidor a través de múltiples mensajes de respuesta automática de gran tamaño. • https://hackerone.com/reports/1680241 • CWE-770: Allocation of Resources Without Limits or Throttling •

CVE-2022-2408 – Guest accounts can list all public channels
https://notcve.org/view.php?id=CVE-2022-2408
14 Jul 2022 — The Guest account feature in Mattermost version 6.7.0 and earlier fails to properly restrict the permissions, which allows a guest user to fetch a list of all public channels in the team, in spite of not being part of those channels. La función de cuenta de invitado en Mattermost versiones 6.7.0 y anteriores no restringe apropiadamente los permisos, lo que permite a un usuario invitado conseguir una lista de todos los canales públicos del equipo, a pesar de no formar parte de esos canales • https://mattermost.com/security-updates • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-863: Incorrect Authorization •

CVE-2022-2406 – Malicious imports can lead to Denial of Service
https://notcve.org/view.php?id=CVE-2022-2406
14 Jul 2022 — The legacy Slack import feature in Mattermost version 6.7.0 and earlier fails to properly limit the sizes of imported files, which allows an authenticated attacker to crash the server by importing large files via the Slack import REST API. La función de importación de Slack heredada en Mattermost versiones 6.7.0 y anteriores, no limita apropiadamente el tamaño de los archivos importados, lo que permite a un atacante autenticado bloquear el servidor importando archivos grandes por medio de la API REST de imp... • https://mattermost.com/security-updates • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •

CVE-2022-1002 – HTML Injection while inviting Guests
https://notcve.org/view.php?id=CVE-2022-1002
18 Mar 2022 — Mattermost 6.3.0 and earlier fails to properly sanitize the HTML content in the email invitation sent to guest users, which allows registered users with special permissions to invite guest users to inject unescaped HTML content in the email invitations. Mattermost versiones 6.3.0 y anteriores, no sanean apropiadamente el contenido HTML en la invitación por correo electrónico enviada a usuarios invitados, lo que permite a usuarios registrados con permisos especiales para invitar a usuarios invitados inyectar... • https://hackerone.com/reports/1443567 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) •

CVE-2022-1003 – Sysadmin can override existing configs & bypass restrictions like EnableUploads
https://notcve.org/view.php?id=CVE-2022-1003
18 Mar 2022 — One of the API in Mattermost version 6.3.0 and earlier fails to properly protect the permissions, which allows the system administrators to combine the two distinct privileges/capabilities in a way that allows them to override certain restricted configurations like EnableUploads. Una de las API de Mattermost versiones 6.3.0 y anteriores, no protege apropiadamente los permisos, lo que permite a administradores del sistema combinar los dos privilegios/capacidades distintos de forma que puedan anular determina... • https://mattermost.com/security-updates • CWE-268: Privilege Chaining CWE-269: Improper Privilege Management •

CVE-2022-0708 – Team Creator's Email Address is disclosed to Team Members via one of the APIs
https://notcve.org/view.php?id=CVE-2022-0708
21 Feb 2022 — Mattermost 6.3.0 and earlier fails to protect email addresses of the creator of the team via one of the APIs, which allows authenticated team members to access this information resulting in sensitive & private information disclosure. Mattermost versiones 6.3.0 y anteriores, no protegen las direcciones de correo electrónico del creador del equipo por medio de una de las APIs, lo que permite a miembros autenticados del equipo acceder a esta información, resultando en una divulgación de información confidencia... • https://mattermost.com/security-updates • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVE-2021-37864 – Users can view the contents of an archived channel when access is explicitly denied by the system admin
https://notcve.org/view.php?id=CVE-2021-37864
18 Jan 2022 — Mattermost 6.1 and earlier fails to sufficiently validate permissions while viewing archived channels, which allows authenticated users to view contents of archived channels even when this is denied by system administrators by directly accessing the APIs. Mattermost versiones 6.1 y anteriores no comprueban suficientemente los permisos mientras son visualizados los canales archivados, lo que permite a usuarios autenticados visualizar el contenido de los canales archivados incluso cuando los administradores d... • https://mattermost.com/security-updates • CWE-284: Improper Access Control CWE-863: Incorrect Authorization •

CVE-2021-37865 – Server-side Denial of Service while processing a specifically crafted GIF file
https://notcve.org/view.php?id=CVE-2021-37865
18 Jan 2022 — Mattermost 6.2 and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service. Mattermost versiones 6.2 y anteriores no procesan suficientemente un archivo GIF específicamente diseñado cuando es cargado mientras es redactada una publicación, lo que permite a usuarios autenticados causar el agotamiento de los recursos mientra... • https://hackerone.com/reports/1428260 • CWE-400: Uncontrolled Resource Consumption •