Communication and Collaboration

In Mattermost versions 10.5.x ≤ 10.5.4 and 9.11.x ≤ 9.11.13 a low severity vulnerability CVE-2025-4128 was detected. This vulnerability allows guest users to bypass permissions and access information about public teams they are not members of by making direct API calls to /api/v4/teams/{team_id}. To address this issue, users should upgrade Mattermost to versions 10.5.5 for the 10.5.x series or 9.11.14 for the 9.11.x series. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-4128.

In Discourse prior to version 3.4.4 (stable branch), 3.5.0.beta5 (beta branch) and 3.5.0.beta6-dev (tests-passed branch) a high severity vulnerability CVE-2025-48877 was detected. This vulnerability allows attackers to execute arbitrary JavaScript through Codepen iframes included in the default allowed_iframes site setting. To address this issue, users should upgrade Discourse to versions 3.4.4 (stable branch), 3.5.0.beta5 (beta branch) and 3.5.0.beta6-dev (tests-passed branch). For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-48877.

In Discourse versions prior to 3.4.4 (stable branch), 3.5.0.beta5 (beta branch) and 3.5.0.beta6-dev (tests-passed branch) a high severity vulnerability CVE-2025-48062 was detected. This vulnerability allows HTML injection in email bodies when invites to users without accounts include topic titles containing HTML, affecting both private message and topic invitations with custom messages. To address this issue, users should upgrade Discourse to versions 3.4.4, 3.5.0.beta5 or 3.5.0.beta6-dev. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-48062.

In Discourse versions prior to 3.4.4 (stable branch), 3.5.0.beta5 (beta branch) and 3.5.0.beta6-dev (tests-passed branch) a high severity vulnerability CVE-2025-48053 was detected. This vulnerability allows attackers to reduce the availability of a Discourse instance by sending a malicious URL in a private message to a bot user. To address this issue, users should upgrade Discourse to versions 3.4.4 (stable branch), 3.5.0.beta5 (beta branch) or 3.5.0.beta6-dev (tests-passed branch). For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-48053.

In Mattermost versions 10.7.x ≤ 10.7.0, 10.5.x ≤ 10.5.3 and 9.11.x ≤ 9.11.12 a medium severity vulnerability CVE-2025-3611 was detected. This vulnerability allows authenticated users with System Manager privileges to bypass configured access restrictions and view team details through direct API requests, even when access to Teams is explicitly denied in the System Console. To address this issue, users should upgrade Mattermost to versions 10.7.1, 10.5.4, 9.11.13 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-3611.

In Mattermost versions 10.7.x ≤ 10.7.0, 10.6.x ≤ 10.6.2, 10.5.x ≤ 10.5.3 and 9.11.x ≤ 9.11.12 a medium severity vulnerability CVE-2025-3230 was detected. This vulnerability allows deactivated users to retain full system access by continuing to use previously issued personal access tokens, due to improper invalidation of these tokens after deactivation. To address this issue, users should upgrade Mattermost to versions 10.8.0, 10.7.1, 10.6.3, 10.5.4, 9.11.13 or higher. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-3230.

In Mattermost versions 10.7.x ≤ 10.7.0, 10.6.x ≤ 10.6.2, 10.5.x ≤ 10.5.3 and 9.11.x ≤ 9.11.12 a medium severity vulnerability CVE-2025-2571 was detected. This vulnerability allows attackers to gain unauthorized access to bot accounts via the Google OAuth signup flow, due to failure to clear associated Google OAuth credentials when converting user accounts to bot accounts. To address this issue, users should upgrade Mattermost to versions 10.7.1, 10.6.3, 10.5.4 and 9.11.13. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-2571.

In Mattermost versions 10.7.0 and earlier, 10.6.2 and earlier, 10.5.3 and earlier, and 9.11.12 and earlier a medium severity vulnerability CVE-2025-3913 was detected. This vulnerability allows team administrators without the ‘invite user’ permission to access and modify team invite IDs via the /api/v4/teams/:teamId/privacy endpoint due to improper permission validation when changing team privacy settings. To address this issue, users should upgrade Mattermost to versions 10.7.1, 10.6.3, 10.5.4, 9.11.13 or 8.0.0-20250412152950-02c76784380a. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-3913.

In Mattermost versions 10.5.x ≤ 10.5.3 and 9.11.x ≤ 9.11.11 a low severity vulnerability CVE-2025-2570 was detected. This vulnerability allows a System Manager to access `ExperimentalSettings` via the System Console even when the `RestrictSystemAdmin` setting is true, due to improper access control. To address this issue, users should upgrade Mattermost to versions above 10.5.3 or 9.11.11. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2025-2570.