Medium severity · published Jul 3, 2024
CVE-2024-39361
Creating posts with user-defined IDs permitted in CreatePost API
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
9.8.0; 9.7.0 through 9.7.4; 9.6.0 through 9.6.2; 9.5.0 through 9.5.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-39361
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-39361
Vendor Advisory
https://mattermost.com/security-updates
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