CVE-2023-47865

Username and Icon override can be used by members when Hardened Mode is enabled

Description

Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and icon when making a post even if the Hardened Mode setting was enabled

Remediation

Solution:

  • Update Mattermost Server to versions 7.8.13, 8.1.4 or higher.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.11%
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-2023-47865?
CVE-2023-47865 has been scored as a medium severity vulnerability.
How to fix CVE-2023-47865?
To fix CVE-2023-47865: Update Mattermost Server to versions 7.8.13, 8.1.4 or higher.
Is CVE-2023-47865 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-47865 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-2023-47865?
CVE-2023-47865 affects Mattermost Mattermost.
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