CVE-2023-2793

Stack exhaustion in PreparePostForClientWithEmbedsAndImages

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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2023-2797

Path traversal in GitHub plugin's code preview feature

Mattermost fails to sanitize code permalinks, allowing an attacker to preview code from private repositories by posting a specially crafted permalink on a channel.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2023-2831

Denial of Service while unescaping a Markdown string

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.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2023-2785

Specially crafted search query can cause large log entries in postgres

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

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2023-48268

Denial of Service via Board Import Zip Bomb

Mattermost fails to limit the amount of data extracted from compressed archives during board import in Mattermost Boards allowing an attacker to consume excessive resources, possibly leading to Denial of Service, by importing a board using a specially crafted zip (zip bomb).

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2023-47168

Open redirect in /oauth/<service>/mobile_login?redirect_to=

Mattermost fails to properly check a redirect URL parameter allowing for an open redirect was possible when the user clicked "Back to Mattermost" after providing a invalid custom url scheme in /oauth/{service}/mobile_login?redirect_to=

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2023-45847

Playbook Plugin Crash via Run Checklist

Mattermost fails to to check the length when setting the title in a run checklist in Playbooks, allowing an attacker to send a specially crafted request and crash the Playbooks plugin

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost Server

CVE-2024-6428

Limited DoS due to permitting creating users with user-defined IDs

Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2, 9.5.x <= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2024-39830

Timing attack during remote cluster token comparison when shared channels are enabled

Mattermost versions 9.8.x <= 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5, when shared channels are enabled, fail to use constant time comparison for remote cluster tokens which allows an attacker to retrieve the remote cluster token via a timing attack during remote cluster token comparison.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2024-39807

Channel IDs of archived/restored channels leaked via webhook events

Mattermost versions 9.5.x <= 9.5.5 and 9.8.0 fail to properly sanitize the recipients of a webhook event which allows an attacker monitoring webhook events to retrieve the channel IDs of archived or restored channels.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2024-39767

Spoofed push notifications from malicious server

Mattermost Mobile Apps versions <=2.16.0 fail to validate that the push notifications received for a server actually came from this serve that which allows a malicious server to send push notifications with another server’s diagnostic ID or server URL and have them show up in mobile apps as that server’s push notifications.

CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost Mobile

CVE-2024-39361

Creating posts with user-defined IDs permitted in CreatePost API

Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2024-39353

RemoteClusterFrame payloads are audit logged in full

Mattermost versions 9.5.x <= 9.5.5 and 9.8.0 fail to sanitize the RemoteClusterFrame payloads before audit logging them which allows a high privileged attacker with access to the audit logs to read message contents.

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2024-37182

Lack of permissions prompting when opening external URLs

Mattermost Desktop App versions <=5.7.0 fail to correctly prompt for permission when opening external URLs which allows a remote attacker to force a victim over the Internet to run arbitrary programs on the victim's system via custom URI schemes.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost Desktop

CVE-2024-36287

Bypass of TCC restrictions on macOS

Mattermost Desktop App versions <=5.7.0 fail to disable certain Electron debug flags which allows for bypassing TCC restrictions on macOS.

CVSS 3.1 · 3.8 Low EPSS < 1% KEV · Not listed

Vendors

Apple Mattermost

Products

Macos Mattermost Desktop

CVE-2024-36257

Lack of permission check when updating the profile picture of a remote user (shared channels enabled)

Mattermost versions 9.5.x <= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost

CVE-2024-32945

LaTeX post content manipulation via renderer state leak across contexts

Mattermost Mobile Apps versions <=2.16.0 fail to protect against abuse of a globally shared MathJax state which allows an attacker to change the contents of a LateX post, by creating another post with specific macro definitions.

CVSS 3.1 · 2.6 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost Mobile

CVE-2024-24776

Incorrect Authorization leads to Channel Member Count Leak

Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count API resulting in channel member counts being leaked to a user without permissions.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost Server

CVE-2024-24774

Missing authorization allows users to access arbitrary security levels on Jira through webhooks (Jira Plugin)

Mattermost Jira Plugin handling subscriptions fails to check the security level of an incoming issue or limit it based on the user who created the subscription resulting in registered users on Jira being able to create webhooks that give them access to all Jira issues.

CVSS 3.1 · 3.4 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost Server

CVE-2024-23319

CSRF issue allows disconnecting a user's Jira connection through a simple post message (Jira Plugin)

Mattermost Jira Plugin fails to protect against logout CSRF allowing an attacker to post a specially crafted message that would disconnect a user's Jira connection in Mattermost only by viewing the message.

CVSS 3.1 · 3.5 Low EPSS < 1% KEV · Not listed

Vendors

Mattermost

Products

Mattermost Server