Medium severity · published Jul 18, 2025
CVE-2025-6233
Arbitrary file read by system admin via path traversal
4.9
CVSS
0.4%
EPSS
No
On KEV
Description
Mattermost versions 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to sanitize input paths of file attachments in the bulk import JSONL file, which allows a system admin to read arbitrary system files via path traversal.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
10.8.0 through 10.8.1; 10.7.0 through 10.7.3; 10.5.0 through 10.5.7; 9.11.0 through 9.11.16 · source: vendor
MS
Mattermost Server · Mattermost
9.11.0 before 9.11.17; 10.5.0 before 10.5.8; 10.7.0 before 10.7.4; 10.8.0 before 10.8.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6233
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-6233
Vendor Advisory
https://mattermost.com/security-updates
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