cve.bz

CVE-2023-6202

4.3 mediumEPSS 0.4%

Medium (4.3) in mattermost mattermost. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost/server/v8 8.1.4, 9.0.2, 9.1.1.

Mattermost fails to perform proper authorization in the /plugins/focalboard/api/v2/users endpoint allowing an attacker who is a guest user and knows the ID of another user to get their information (e.g. name, surname, nickname) via Mattermost Boards.

Severity

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-31)
CWE
CWE-284
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-85jj-c9jr-9jhxGogithub.com/mattermost/mattermost/server/v8>=9.1.0 <9.1.19.1.1
GHSA-85jj-c9jr-9jhxGogithub.com/mattermost/mattermost/server/v8>=9.0.0 <9.0.29.0.2
GHSA-85jj-c9jr-9jhxGogithub.com/mattermost/mattermost/server/v8<8.1.48.1.4
GHSA-85jj-c9jr-9jhxGogithub.com/mattermost/mattermost-server/v6<7.8.137.8.13

References

Check your stackJSON