Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Mattermost / Mattermost | affected 0 through 8.1.7; affected 0 through 9.1.4; affected 0 through 9.2.3; unaffected 9.3.0; unaffected 9.2.4; unaffected 9.1.5; unaffected 8.1.8 |
CWE
CWE-400
References
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.