VULNERABILITY INTELLIGENCE

CVE-2024-1402

CVSS score4.3 MEDIUM
EPSS probability0.52%
CISA KEVNot currently listed
Published2024-02-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Description

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.

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-400
  • nvd@nist.gov: CWE-400

Primary references