Medium severity · published Nov 27, 2023
CVE-2023-47865
Username and Icon override can be used by members when Hardened Mode is enabled
4.3
CVSS
0.4%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
through 8.1.3; through 7.8.12 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-47865
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-47865
Vendor Advisory
https://mattermost.com/security-updates
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