CVE-2017-18887 — Sensitive Information Exposure in Mattermost Mattermost-server

CWE-200 — Sensitive Information Exposure5 documents4 sources
Severity
5.3MEDIUMNVD
EPSS
0.2%
top 53.15%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Github.com Mattermost Mattermost-serverMattermost Server
Timeline
PublishedJun 19
Latest updateDec 15

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages2 packages

▶NVDmattermost/mattermost_server4.2.0 — 4.2.1+2
▶Gogithub.com/mattermost_mattermost-server4.2.0-rc1 — 4.2.1+5

🔴Vulnerability Details

4
OSV
Mattermost Server exposes team creator's e-mail address to other members in github.com/mattermost/mattermost-server↗2025-12-15
▶
GHSA
Mattermost Server exposes team creator's e-mail address to other members↗2022-05-24
▶
OSV
Mattermost Server exposes team creator's e-mail address to other members↗2022-05-24
▶
CVEList
CVE-2017-18887: An issue was discovered in Mattermost Server before 4↗2020-06-19
▶
CVE-2017-18887 — Sensitive Information Exposure | cvebase