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CVE-2023-5339

17
FAUCET Score

CVE-2023-5339 describes a vulnerability in Mattermost Desktop where, after a fresh installation, the application logs all keystrokes, including passwords, due to an inappropriate initial log level. This local vulnerability has a medium severity CVSS score of 5.5, indicating a high confidentiality impact with no integrity or availability impact, requiring local access and low privileges to exploit. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0, <= 5.4.0CPE match
cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
<= 5.4.0CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
4.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 26th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

mattermost.com / security-updates
Vendor Advisory