Medium severity · published Dec 12, 2023
CVE-2023-6547
Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook…
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Mattermost Server · Mattermost
through 8.1.5; 9.2.0 through 9.2.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-6547
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-6547
Issue Tracking
https://mattermost.com/security-updates
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