Vulnerability · CVE-2025-13321
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the use
Published Dec 17, 2025 · catalog updated Dec 17, 2025 · Mattermost Mattermost
Last checked Nov 2, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-13321. EPSS is 0.12%. Act only if a listed version of Mattermost Mattermost is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-13411 · Medium
- CVE-2026-20796 · Low
- CVE-2026-22892 · Medium
- CVE-2025-64641 · Medium
- CVE-2025-13767 · Medium
- Severity
- Low3.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.12%
- Remediation
- Advisory link
- Affected products
- vendor Mattermost Mattermost 0 ≤6.0.0
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Mattermost Mattermost 0 ≤6.0.00 ≤6.0.0
How to fix CVE-2025-13321
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 0 ≤6.0.0
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-13321. EPSS is 0.12%. Act only if a listed version of Mattermost Mattermost is installed.
Which versions are affected?
Compare what you have installed with Mattermost Mattermost 0 ≤6.0.0 0 ≤6.0.0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.12%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Dec 17, 2025 · EUVD
Detected
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
Dec 17, 2025 · EUVD
Updated
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
Sources
- CVE.orgVulnerability recordCVE-2025-13321
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-13321
30-day exploitation probability 0.12%
first.org - EUVDVulnerability recordEUVD-2025-203919
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 2, 2026
- CVE.orgNov 2, 2026
- EUVDNov 1, 2026