CVE-2023-5522

Medium

Description

Mattermost Mobile fails to limit the maximum number of Markdown elements in a post allowing an attacker to send a post with hundreds of emojis to a channel and freeze the mobile app of users when viewing that particular channel. 

SeverityMedium
CVSS4.3
Exploit probability—
ProductMattermost
PublishedOct 17, 2023
First seenOct 17, 2023

How to fix

Update
  • mattermost mattermost2.8.0 or later

Affected products

ProductAffected versionsFixed in
mattermost mattermostv < 2.8.02.8.0

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CVE-2023-5522 · Mattermost · Dark Radar