Insufficiently Protected Credentials

Overview Affected versions of this package are vulnerable to Insufficiently Protected Credentials via the Slack import process. An attacker can gain unauthorized access to user accounts by obtaining disclosed passwords and impersonating users. Remediation Upgrade...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the Host header when constructing response URLs for custom slash commands. An attacker can redirect responses to a server under their control by sending a specially crafted request with a spoofed Hos...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the invite confirmation process due to insufficient validation of the RefreshedToken. An attacker can bypass intended token rotation and reuse an original invite token by sending a crafted invite confirmation...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS due to the lack of rate limiting in the login process. An attacker can exhaust server resources by sending a large number of parallel login requests via a single HTTP/2 packet, potentially causing the server to cra...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the allowopeninvite field. An attacker can gain unauthorized access to restricted team invitation functionality by sending crafted API requests. Remediation Upgrade...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the validate input size of hashtags in HTTP requests. An attacker can exhaust CPU resources by submitting a single HTTP request containing a post with thousands of space-separated...

Information Exposure

Overview Affected versions of this package are vulnerable to Information Exposure via the GET /api/v4/channels/channelid/commonteams endpoint. An attacker can access team email addresses intended to be visible only to Team Admins by making authenticated requests to this endpoint. Remediation...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the /api/v4/teams/teamid/channels/searcharchived endpoint. An attacker can access information about archived public channels by sending crafted requests as a guest user. Remediation Upgrade...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can gain unauthorized access to archived channel content and files by using the "Open in...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the MSTeams plugin OAuth flow. An attacker can modify arbitrary posts by sending a crafted OAuth redirect URL. Remediation Upgrade github.com/mattermost/mattermost/server/public/model to...

Timing Attack

Overview Affected versions of this package are vulnerable to Timing Attack via the IsValidWebAuthRedirectURL function. An attacker can obtain sensitive information such as Cloud API keys and OAuth client secrets by analyzing response times during authentication attempts. Remediation Upgrade...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the Slack import functionality. An attacker can create verified user accounts with arbitrary email domains by submitting malicious import data to bypass email-based team access restrictions. Remediation Upgrade...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization in the fullyQualifiedRedirectURL function. An attacker can gain unauthorized access to any team by manipulating the invite token, bypassing intended restrictions. Remediation Upgrade...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the Slack import functionality. An attacker can create verified user accounts with arbitrary email domains by submitting malicious import data to bypass email-based team access restrictions. Remediation Upgrade...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the Slack import functionality. An attacker can create verified user accounts with arbitrary email domains by submitting malicious import data to bypass email-based team access restrictions. Remediation Upgrade...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect via improper validation of redirect URLs in the OAuth login process. An attacker can redirect users to malicious sites by crafting specific OAuth login URLs. Remediation Upgrade...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to the improper verification of user permissions when accessing groups. An attacker can view unauthorized group information by crafting a malicious API request. Remediation Upgrade...

Overly Restrictive Account Lockout Mechanism

Overview Affected versions of this package are vulnerable to Overly Restrictive Account Lockout Mechanism due to the failure in the lockout mechanism for LDAP users after multiple unsuccessful login attempts. An attacker can cause a denial of service by repeatedly attempting to log in with...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in that a user with the "Edit Other Users" permission set, but not broader high-level permissions, can modify the properties of admin accounts. Remediation Upgrade...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the createChannelBookmark and updateChannelBookmark functions in channelbookmark.go. This allows attackers to create and update bookmarks on archived channels. Remediation Upgrade...