Communication and Collaboration

In Mattermost Desktop App versions up to and including 5.13.3 a medium severity vulnerability CVE-2026-1628 was detected. This vulnerability allows a malicious server to expose preload script functionality to untrusted servers when a user opens an external link within the Mattermost app, due to missing listeners restricting navigation to external sites. To address this issue, users should upgrade Mattermost Desktop App to version 5.13.4.0 or higher. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-1628.

In Discourse versions prior to 2025.12.2, 2026.1.1, and 2026.2.0 a high severity vulnerability CVE-2026-26265 was detected. This vulnerability allows any user, including anonymous users, to retrieve private user field values from the directory by exploiting an IDOR in the `directory items` endpoint, bypassing visibility restrictions and potentially exposing sensitive information such as phone numbers or addresses. To address this issue, users should upgrade Discourse to versions 2025.12.2, 2026.1.1, 2026.2.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-26265.

In Discourse versions prior to 2025.12.2, 2026.1.1, and 2026.2.0 a medium severity vulnerability CVE-2026-26207 was detected. This vulnerability allows any authenticated user to interact with policies on posts they do not have permission to view and to enumerate which posts have policies attached, due to missing access checks in the `discourse-policy` plugin. To address this issue, users should upgrade Discourse to versions 2025.12.2, 2026.1.1, 2026.2.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-26207.

In Discourse versions prior to 2025.12.2, 2026.1.1, and 2026.2.0 a medium severity vulnerability CVE-2026-26078 was detected. This vulnerability allows an attacker to forge valid Patreon webhook signatures when the `patreon_webhook_secret` site setting is blank, enabling unauthorized creation, modification, or deletion of Patreon pledge data and triggering patron-to-group synchronization. To address this issue, users should upgrade Discourse to versions 2025.12.2, 2026.1.1, 2026.2.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-26078.

In Discourse versions prior to 2025.12.2, 2026.1.1, and 2026.2.0 a medium severity vulnerability CVE-2026-26077 was detected. This vulnerability allows unauthenticated attackers to forge webhook payloads on several endpoints (SendGrid, Mailjet, Mandrill, Postmark, SparkPost) when no authentication token is configured, potentially inflating user bounce scores and causing legitimate user emails to be disabled. To address this issue, users should upgrade Discourse to versions 2025.12.2, 2026.1.1, 2026.2.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-26077.

In Dolibarr ERP/CRM version 10.0.1 a high severity vulnerability CVE-2019-25452 was detected. This vulnerability allows unauthenticated attackers to execute arbitrary SQL queries via the `elemid` POST parameter in the `viewcat.php` endpoint, potentially exposing sensitive database information through error-based or time-based blind SQL injection. Currently, there is no fix version for this issue. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2019-25452.

In Discourse versions prior to 2025.12.2, 2026.1.1 and 2026.2.0 a medium severity vulnerability CVE-2026-27021 was detected. This vulnerability allows attackers to access voter details of polls in any post due to missing post visibility checks in the voters endpoint of the poll plugin. To address this issue users must upgrade to Discourse versions 2025.12.2, 2026.1.1 or 2026.2.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-27021.

In Discourse versions prior to 2025.12.2, 2026.1.1 and 2026.2.0 a low severity vulnerability CVE-2026-26979 was detected. This vulnerability allows TL4 users to close, archive, and pin topics in private categories they do not have access to. To address this issue users must upgrade to Discourse versions 2025.12.2, 2026.1.1 or 2026.2.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-26979.

In Discourse versions prior to 2025.12.2, 2026.1.1, and 2026.2.0 a medium severity vulnerability CVE-2026-27162 was detected. This vulnerability allows authenticated users to access posts that should be restricted, including whispers, because the `posts_nearby` endpoint returned all posts regardless of type without properly filtering by user permissions. To address this issue, users should upgrade Discourse to versions 2025.12.2, 2026.1.1, 2026.2.0 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-27162.