Communication and Collaboration

In Mattermost versions 10.4.x up to and including 10.4.2, 10.3.x up to and including 10.3.3 and 9.11.x up to and including 9.11.8 a medium severity vulnerability CVE-2025-27933 was detected. This vulnerability allows members with permission to convert public channels to private ones to also convert private channels to public, due to a failure to enforce channel conversion restrictions. To address this issue, users should upgrade Mattermost to versions 10.5.0, 10.4.3, 10.3.4, 9.11.9 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-27933.

In Mattermost versions 10.4.x up to and including 10.4.2, 10.3.x up to and including 10.3.3, 9.11.x up to and including 9.11.8 and 10.5.x up to and including 10.5.0 a medium severity vulnerability CVE-2025-24920 was detected. This vulnerability allows authenticated users to create or update bookmarks in archived channels, due to a failure to restrict bookmark creation and updates in those channels. To address this issue, users should upgrade Mattermost to versions 10.6.0, 10.4.3, 10.3.4, 9.11.9, 10.5.1 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-24920.

In Mattermost versions 9.11.x up to and including 9.11.8 a low severity vulnerability CVE-2025-27715 was detected. This vulnerability allows team admins to join private channels via crafted permalink links without explicit approval, due to the failure to prompt for approval before adding a team admin to a private channel. To address this issue, users should upgrade Mattermost to versions 10.5.0, 9.11.9 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-27715.

In Mattermost versions 10.4.x up to and including 10.4.2, 10.3.x up to and including 10.3.3 and 9.11.x up to and including 9.11.8 a medium severity vulnerability CVE-2025-25274 was detected. This vulnerability allows authenticated users to execute commands in archived channels due to a failure to restrict command execution in those channels. To address this issue, users should upgrade Mattermost to versions 10.5.0, 10.4.3, 10.3.4, 9.11.9 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-25274.

In Mattermost versions 9.11.x up to and including 9.11.8 a medium severity vulnerability CVE-2025-1472 was detected. This vulnerability allows attackers with the Viewer role, even when configured with No Access to Reporting, to still view team and site statistics due to improper authorization enforcement. To address this issue, users should upgrade Mattermost to versions 9.11.9 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-1472.

In Mattermost Desktop App versions 5.10.0 and prior a low severity vulnerability CVE-2025-1398 was detected. This vulnerability allows attackers with remote access to bypass Transparency, Consent, and Control (TCC) via code injection due to explicitly declared unnecessary macOS entitlements. To address this issue, users should upgrade Mattermost to versions 5.11.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-1398.

In Mattermost versions 10.4.x ≤ 10.4.1, 9.11.x ≤ 9.11.7, 10.3.x ≤ 10.3.2, and 10.2.x ≤ 10.2.2 a critical severity vulnerability CVE-2025-24490 was detected. This vulnerability allows attackers to retrieve sensitive data from the database via SQL injection due to the failure to use prepared statements when reordering specially crafted board categories. To address this issue, users should upgrade Mattermost to versions 9.0.5 or higher. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-24490.

In Mastodon versions prior to 4.1.23, 4.2.16 and 4.3.4 a medium severity vulnerability CVE-2025-27399 was detected. This vulnerability allows unapproved users to view domain block reasons when the visibility is set to “To logged-in users,” potentially exposing sensitive moderation details. To address this issue, users should upgrade Mastodon to versions 4.1.23, 4.2.16 or 4.3.4. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-27399.

In Mattermost versions 9.11.x up to 9.11.6 and 10.4.x up to 10.4.1 a low severity vulnerability CVE-2025-1412 was detected. The issue allows users converted to bots to retain their previous permissions, potentially escalating privileges. To address this issue, users should upgrade Mattermost to version 9.11.7 or 10.4.2. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-1412.