CVE-2024-24988
MEDIUM4.3EPSS 0.40%Mattermost denial of service through long emoji value
Published: 2/29/2024Modified: 2/4/2026
Description
Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.
Affected packages (6)
- Bitnami/mattermostfrom 0, < 8.1.8, >= 9.0.0, < 9.1.5, >= 9.2.0, < 9.2.4
- Go/github.com/mattermost/mattermost-server>= 9.2.0+incompatible, < 9.2.5+incompatible, >= 9.3.0+incompatible, < 9.3.1+incompatible
- Go/github.com/mattermost/mattermost-server/v5from 0
- Go/github.com/mattermost/mattermost-server/v6from 0
- Go/github.com/mattermost/mattermost/server/v8>= 9.3.0, < 9.3.1
- Go/github.com/mattermost/mattermost/server/v8from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| 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 |