Mattermost Server vulnerabilities

CVE-2023-27266 [LOW] CWE-200 CVE-2023-27266: Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the /api/v4/u Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the /api/v4/users/me/teams API endpoint, allowing an attacker with team admin privileges to learn the team owner's email address in the response.

CVE-2023-27265 [LOW] CWE-200 CVE-2023-27265: Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the "Regenera Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the "Regenerate Invite Id" API endpoint, allowing an attacker with team admin privileges to learn the team owner's email address in the response.

CVE-2022-3257 [MEDIUM] CWE-400 CVE-2022-3257: Mattermost version 7.1.x and earlier fails to sufficiently process a specifically crafted GIF file w Mattermost version 7.1.x and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.

CVE-2022-3147 [MEDIUM] CWE-400 CVE-2022-3147: Mattermost version 7.0.x and earlier fails to sufficiently limit the in-memory sizes of concurrently Mattermost version 7.0.x and earlier fails to sufficiently limit the in-memory sizes of concurrently uploaded JPEG images, which allows authenticated users to cause resource exhaustion on specific system configurations, resulting in server-side Denial of Service.

CVE-2022-2401 [MEDIUM] CWE-200 CVE-2022-2401: Unrestricted information disclosure of all users in Mattermost version 6.7.0 and earlier allows team Unrestricted information disclosure of all users in Mattermost version 6.7.0 and earlier allows team members to access some sensitive information by directly accessing the APIs.

CVE-2022-2366 [MEDIUM] CWE-276 CVE-2022-2366: Incorrect default configuration for trusted IP header in Mattermost version 6.7.0 and earlier allows Incorrect default configuration for trusted IP header in Mattermost version 6.7.0 and earlier allows attacker to bypass some of the rate limitations in place or use manipulated IPs for audit logging via manipulating the request headers.

CVE-2022-1982 [MEDIUM] CWE-400 CVE-2022-1982: Uncontrolled resource consumption in Mattermost version 6.6.0 and earlier allows an authenticated at Uncontrolled resource consumption in Mattermost version 6.6.0 and earlier allows an authenticated attacker to crash the server via a crafted SVG attachment on a post.

CVE-2022-1384 [HIGH] CWE-477 CVE-2022-1384: Mattermost version 6.4.x and earlier fails to properly check the plugin version when a plugin is ins Mattermost version 6.4.x and earlier fails to properly check the plugin version when a plugin is installed from the Marketplace, which allows an authenticated and an authorized user to install and exploit an old plugin version from the Marketplace which might have known vulnerabilities.

CVE-2022-1385 [MEDIUM] CWE-664 CVE-2022-1385: Mattermost 6.4.x and earlier fails to properly invalidate pending email invitations when the action Mattermost 6.4.x and earlier fails to properly invalidate pending email invitations when the action is performed from the system console, which allows accidentally invited users to join the workspace and access information from the public teams and channels.

CVE-2022-1332 [MEDIUM] CWE-200 CVE-2022-1332: One of the API in Mattermost version 6.4.1 and earlier fails to properly protect the permissions, wh One of the API in Mattermost version 6.4.1 and earlier fails to properly protect the permissions, which allows the authenticated members with restricted custom admin role to bypass the restrictions and view the server logs and server config.json file contents.

CVE-2022-1337 [MEDIUM] CWE-400 CVE-2022-1337: The image proxy component in Mattermost version 6.4.1 and earlier allocates memory for multiple copi The image proxy component in Mattermost version 6.4.1 and earlier allocates memory for multiple copies of a proxied image, which allows an authenticated attacker to crash the server via links to very large image files.

CVE-2022-0903 [HIGH] CWE-787 CVE-2022-0903: A call stack overflow bug in the SAML login feature in Mattermost server in versions up to and inclu A call stack overflow bug in the SAML login feature in Mattermost server in versions up to and including 6.3.2 allows an attacker to crash the server via submitting a maliciously crafted POST body.

CVE-2022-0904 [MEDIUM] CWE-787 CVE-2022-0904: A stack overflow bug in the document extractor in Mattermost Server in versions up to and including A stack overflow bug in the document extractor in Mattermost Server in versions up to and including 6.3.2 allows an attacker to crash the server via submitting a maliciously crafted Apple Pages document.

CVE-2021-37862 [MEDIUM] CWE-754 CVE-2021-37862: Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, whi Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.

CVE-2021-37863 [MEDIUM] CWE-20 CVE-2021-37863: Mattermost 6.0 and earlier fails to sufficiently validate parameters during post creation, which all Mattermost 6.0 and earlier fails to sufficiently validate parameters during post creation, which allows authenticated attackers to cause a client-side crash of the web application via a maliciously crafted post.

CVE-2017-18900 [CRITICAL] CWE-74 CVE-2017-18900: An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. It allows CSV injectio An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. It allows CSV injection via a compliance report.

CVE-2017-18883 [CRITICAL] CWE-331 CVE-2017-18883: An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAut An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provider. There is low entropy for authorization data.

CVE-2017-18885 [CRITICAL] CWE-269 CVE-2017-18885: An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by accessing unintended API endpoints on a user's behalf.

CVE-2017-18911 [CRITICAL] CWE-295 CVE-2017-18911: An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate v An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be skipped for a TLS-based e-mail server.

CVE-2017-18915 [CRITICAL] CWE-276 CVE-2017-18915: An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. After a restart of a se An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. After a restart of a server, an attacker might suddenly gain API Endpoint access.