CVE-2025-6233

Name: CVE-2025-6233
Creator: NVD / NIST
Published: 2025-07-18T10:15:34.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2025-6233 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. 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.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.38%

29.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost Server	>= 9.11.0, < 9.11.17
Mattermost	Mattermost Server	>= 10.5.0, < 10.5.8
Mattermost	Mattermost Server	>= 10.7.0, < 10.7.4
Mattermost	Mattermost Server	>= 10.8.0, < 10.8.2

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Jul 18, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-6233?

How severe is CVE-2025-6233?

CVE-2025-6233 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2025-6233?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-6233?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST