CVE-2023-5522

Mobile app freezes when receiving a post with hundreds of emojis

Published Oct 17, 2023 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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. 

Remediation

Vendor Solution

Update Mattermost Mobile to versions 2.8.0 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-57835 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. 
References
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Sep 5, 2024, 7:58 PM
Reserved
Oct 11, 2023, 12:14 PM
Status
Modified
Published
Oct 17, 2023, 10:15 AM
Modified
Jun 17, 2026, 6:48 AM