Github.Com Mattermost Mattermost-Server V6 vulnerabilities

CVE-2023-1776 [MEDIUM] CWE-79 Mattermost vulnerable to cross-site scripting (XSS) Mattermost vulnerable to cross-site scripting (XSS) Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file. [Issue Identifier](https://mattermost.com/security-updates/): MMSA-2023-00139

CVE-2022-3257 [MEDIUM] CWE-434 Mattermost subject to Denial of Service via upload of special GIF Mattermost subject to Denial of Service via upload of special GIF Mattermost version 7.1.x 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.

CVE-2022-2401 [MEDIUM] CWE-200 Mattermost users could access some sensitive information via API call Mattermost users could access some sensitive information via API call Unrestricted information disclosure of all users in Mattermost version 6.7.0 and earlier allows team members to access some sensitive information by directly accessing the APIs.

CVE-2022-1384 [HIGH] CWE-862 Insecure plugin handling in Mattermost Insecure plugin handling in Mattermost Mattermost version 6.4.x and earlier fails to properly check the plugin version when a plugin is installed from the Marketplace, which allows an authenticated and an authorized user to install and exploit an old plugin version from the Marketplace which might have known vulnerabilities.

CVE-2022-1385 [MEDIUM] CWE-664 Improper Control of a Resource Through its Lifetime in Mattermost Improper Control of a Resource Through its Lifetime in Mattermost Mattermost 6.4.x and earlier fails to properly invalidate pending email invitations when the action is performed from the system console, which allows accidentally invited users to join the workspace and access information from the public teams and channels.

CVE-2022-1332 [MEDIUM] CWE-200 Improper Privilege Management in Mattermost Improper Privilege Management in Mattermost One of the API in Mattermost version 6.4.1 and earlier fails to properly protect the permissions, which allows the authenticated members with restricted custom admin role to bypass the restrictions and view the server logs and server config.json file contents. Per the Mattermost security updates page, versions 6.4.2, 6.3.5, 6.2.5, and 5.37.9 contain patches for this issue

CVE-2022-1337 [MEDIUM] CWE-400 Resource exhaustion in Mattermost Resource exhaustion in Mattermost The image proxy component in Mattermost version 6.4.1 and earlier allocates memory for multiple copies of a proxied image, which allows an authenticated attacker to crash the server via links to very large image files.