cve.bz

CVE-2017-18887

5.3 mediumEPSS 0.9%

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It discloses the team creator's e-mail address to members.

Severity

CVSS 3.1

5.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWE
CWE-200
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-35c4-5qfp-wxj6Gogithub.com/mattermost/mattermost-server<4.1.24.1.2
GHSA-35c4-5qfp-wxj6Gogithub.com/mattermost/mattermost-server>=4.2.0-rc1 <4.2.14.2.1
GHSA-35c4-5qfp-wxj6Gogithub.com/mattermost/mattermost-server>=4.3.0-rc1 <4.3.04.3.0
GO-2025-4199Gogithub.com/mattermost/mattermost-server<4.1.2+incompatible
>=4.2.0-rc1+incompatible <4.2.1+incompatible
>=4.3.0-rc1+incompatible <4.3.0+incompatible		4.1.2+incompatible, 4.2.1+incompatible, 4.3.0+incompatible

References

Check your stackJSON