Medium severity · published Jan 2, 2024
CVE-2023-48732
Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified…
4.3
CVSS
0.5%
EPSS
No
On KEV
Description
Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Mattermost Server · Mattermost
before 8.1.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-48732
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-48732
Vendor Advisory
https://mattermost.com/security-updates
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