CVE-2023-5522

Mobile app freezes when receiving a post with hundreds of emojis

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

Solution:

  • Update Mattermost Mobile to versions 2.8.0 or higher.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.08%
Vendor Advisory mattermost.com
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-5522?
CVE-2023-5522 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5522?
To fix CVE-2023-5522: Update Mattermost Mobile to versions 2.8.0 or higher.
Is CVE-2023-5522 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5522 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5522?
CVE-2023-5522 affects Mattermost Mattermost.
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