GHSA-PWVR-GRQG-7VP2 Mattermost Lack of Access Control Validation

Mattermost versions 10.5.x = 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper validating access controls at time of access. An attacker can gain unauthorized access to thread content by leveraging AI-generated posts. Remediation Upgrade...

Mattermost Lack of Access Control Validation

Mattermost versions 10.5.x = 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts...

CVE-2025-49810

Mattermost versions 10.5.x = 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts...

CVE-2025-47700 AI plugin APIs can be triggered using post actions

Mattermost Server versions 10.5.x = 10.5.9 utilizing the Agents plugin fail to reject empty request bodies which allows users to trick users into clicking malicious links via post actions...

CVE-2025-49810 Thread summarization allows persistent access to channel

Mattermost versions 10.5.x = 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts...

CVE-2025-49810 Thread summarization allows persistent access to channel

Mattermost versions 10.5.x = 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts...

CVE-2025-49810

Summary: Mattermost Server 10.5.x

CVE-2025-49810 Thread summarization allows persistent access to channel

Mattermost versions 10.5.x = 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts...

Mattermost security vulnerabilities

Mattermost is an open source collaboration platform from US-based Mattermost. A security vulnerability exists in Mattermost version 10.5.8 and earlier, which stems from insufficient access control validation and could lead to a user reading threads via AI posts...

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