Total
77 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2023-45223 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost fails to properly validate the "Show Full Name" option in a few endpoints in Mattermost Boards, allowing a member to get the full name of another user even if the Show Full Name option was disabled. | |||||
| CVE-2023-43754 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost fails to check whether the “Allow users to view archived channels” setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the “Allow users to view archived channels” setting is disabled. | |||||
| CVE-2023-40703 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string. | |||||
| CVE-2023-3615 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 8.1 HIGH |
| Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection. | |||||
| CVE-2023-35075 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 3.1 LOW |
| Mattermost fails to use innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though. | |||||
| CVE-2023-2831 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost fails to unescape Markdown strings in a memory-efficient way, allowing an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters. | |||||
| CVE-2023-2808 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link. | |||||
| CVE-2023-2797 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 3.1 LOW |
| Mattermost fails to sanitize code permalinks, allowing an attacker to preview code from private repositories by posting a specially crafted permalink on a channel. | |||||
| CVE-2023-2793 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 6.5 MEDIUM |
| Mattermost fails to validate links on external websites when constructing a preview for a linked website, allowing an attacker to cause a denial-of-service by a linking to a specially crafted webpage in a message. | |||||
| CVE-2023-2792 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 6.5 MEDIUM |
| Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command. | |||||
| CVE-2023-2791 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| When creating a playbook run via the /dialog API, Mattermost fails to validate all parameters, allowing an authenticated attacker to edit an arbitrary channel post. | |||||
| CVE-2023-2788 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 6.2 MEDIUM |
| Mattermost fails to check if an admin user account active after an oauth2 flow is started, allowing an attacker with admin privileges to retain persistent access to Mattermost by obtaining an oauth2 access token while the attacker's account is deactivated. | |||||
| CVE-2023-2787 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 6.5 MEDIUM |
| Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API. | |||||
| CVE-2023-2786 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost fails to properly check the permissions when executing commands allowing a member with no permissions to post a message in a channel to actually post it by executing channel commands. | |||||
| CVE-2023-2785 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost fails to properly truncate the postgres error log message of a search query failure allowing an attacker to cause the creation of large log files which can result in Denial of Service | |||||
| CVE-2023-2784 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.2 MEDIUM |
| Mattermost fails to verify if the requestor is a sysadmin or not, before allowing `install` requests to the Apps allowing a regular user send install requests to the Apps. | |||||
| CVE-2023-2783 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 4.3 MEDIUM |
| Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps. | |||||
| CVE-2023-2514 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 6.7 MEDIUM |
| Mattermost Sever fails to redact the DB username and password before emitting an application log during server initialization. | |||||
| CVE-2023-2193 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 6.5 MEDIUM |
| Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access token. | |||||
| CVE-2023-27264 | 1 Mattermost | 1 Mattermost | 2026-06-17 | N/A | 7.1 HIGH |
| A missing permissions check in Mattermost Playbooks in Mattermost allows an attacker to modify a playbook via the /plugins/playbooks/api/v0/playbooks/[playbookID] API. | |||||