What’s Vulnerable › Vulnerabilities

CVE-2023-5339: Mattermost Desktop logs all keystrokes during initial run after fresh installation 

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-17 · updated 2026-06-17
• Weakness: CWE-200

Description

Mattermost Desktop fails to set an appropriate log level during initial run after fresh installation resulting in logging all keystrokes including password entry being logged.

Affected products

• Mattermost Desktop: through 5.4.0

References

• https://mattermost.com/security-updates
• https://mattermost.com/security-updates

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