CVE-2023-2785 – Specially crafted search query can cause large log entries in postgres
https://notcve.org/view.php?id=CVE-2023-2785
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 • https://mattermost.com/security-updates • CWE-400: Uncontrolled Resource Consumption •
CVE-2023-2831 – Denial of Service while unescaping a Markdown string
https://notcve.org/view.php?id=CVE-2023-2831
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. • https://mattermost.com/security-updates • CWE-400: Uncontrolled Resource Consumption •
CVE-2023-2797 – Path traversal in GitHub plugin's code preview feature
https://notcve.org/view.php?id=CVE-2023-2797
Mattermost fails to sanitize code permalinks, allowing an attacker to preview code from private repositories by posting a specially crafted permalink on a channel. • https://mattermost.com/security-updates • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') •
CVE-2023-2793 – Stack exhaustion in PreparePostForClientWithEmbedsAndImages
https://notcve.org/view.php?id=CVE-2023-2793
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. • https://mattermost.com/security-updates • CWE-400: Uncontrolled Resource Consumption •
CVE-2023-2792 – Ephemeral messages return private channel contents in permalink previews
https://notcve.org/view.php?id=CVE-2023-2792
Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command. • https://mattermost.com/security-updates • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •