CVE-2023-2786
Mattermost vulnerability analysis and mitigation

Overview

CVE-2023-2786 is a security vulnerability discovered in Mattermost that affects the permissions checking mechanism when executing commands. The vulnerability was disclosed on June 16, 2023, and impacts Mattermost versions 7.1.0-7.1.9, 7.8.0-7.8.4, 7.9.0-7.9.3, and 7.10.0. The issue allows members with no permissions to post messages in channels by exploiting command execution functionality (NVD).

Technical details

The vulnerability stems from improper permission validation when executing channel commands. The issue has been assigned a CVSS v3.1 Base Score of 4.3 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. It has been classified under CWE-862 (Missing Authorization) indicating a fundamental flaw in the authorization mechanism (NVD).

Impact

When exploited, this vulnerability allows unauthorized users to bypass permission restrictions and post messages in channels where they should not have posting privileges. This creates a potential for unauthorized communication and information disclosure within the Mattermost platform (NVD).

Mitigation and workarounds

Organizations using affected versions of Mattermost should upgrade to the latest patched version. The vulnerability has been fixed in subsequent releases after the affected versions 7.1.9, 7.8.4, 7.9.3, and 7.10.0 (NVD).

Additional resources


SourceThis report was generated using AI

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