CVSS: 4.3EPSS: 0%CPEs: 1EXPL: 0CVE-2023-2281 – Archiving a team broadcasts unsanitized data over WebSockets
https://notcve.org/view.php?id=CVE-2023-2281
When archiving a team, Mattermost fails to sanitize the related Websocket event sent to currently connected clients. This allows the clients to see the name, display name, description, and other data about the archived team. • https://mattermost.com/security-updates • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-1831 – User password logged in audit logs
https://notcve.org/view.php?id=CVE-2023-1831
Mattermost fails to redact from audit logs the user password during user creation and the user password hash in other operations if the experimental audit logging configuration was enabled (ExperimentalAuditSettings section in config). • https://mattermost.com/security-updates • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-319: Cleartext Transmission of Sensitive Information •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-1777 – Information disclosure in linked message previews
https://notcve.org/view.php?id=CVE-2023-1777
Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message. • https://mattermost.com/security-updates • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-668: Exposure of Resource to Wrong Sphere •
CVSS: 7.3EPSS: 0%CPEs: 2EXPL: 0CVE-2023-1776 – Stored XSS via SVG attachment on Boards
https://notcve.org/view.php?id=CVE-2023-1776
Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file. • https://mattermost.com/security-updates • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2023-1775 – Unsanitized events sent over Websocket to regular users in a High Availability environment
https://notcve.org/view.php?id=CVE-2023-1775
When running in a High Availability configuration, Mattermost fails to sanitize some of the user_updated and post_deleted events broadcast to all users, leading to disclosure of sensitive information to some of the users with currently connected Websocket clients. • https://mattermost.com/security-updates • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-668: Exposure of Resource to Wrong Sphere •