CVE-2023-40703
MEDIUM4.3EPSS 0.09%Mattermost Uncontrolled Resource Consumption vulnerability
Published: 11/27/2023Modified: 2/4/2026
Description
Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.
Affected packages (2)
- Go/github.com/mattermost/mattermost-server/v6from 0, < 7.8.13
- Go/github.com/mattermost/mattermost/server/v8>= 9.1.0, < 9.1.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |