CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LCVE-2024-1402
Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
- CWE
- CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-32h7-7j94-8fc2 | Go | github.com/mattermost/mattermost/server/v8 | <8.1.8 | 8.1.8 |
| GHSA-32h7-7j94-8fc2 | Go | github.com/mattermost/mattermost/server/v8 | >=9.2.0 <9.2.4 | 9.2.4 |
| GHSA-32h7-7j94-8fc2 | Go | github.com/mattermost/mattermost/server/v8 | >=9.1.0 <9.1.5 | 9.1.5 |
| GO-2024-2541 | Go | github.com/mattermost/mattermost-server | >=9.1.0+incompatible <9.1.5+incompatible >=9.2.0+incompatible <9.2.4+incompatible | 9.1.5+incompatible, 9.2.4+incompatible |
| GO-2024-2541 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2024-2541 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2024-2541 | Go | github.com/mattermost/mattermost/server/v8 | all versions | no fix published |