CVE-2017-18908 — Improper Authentication in Mattermost Mattermost-server

CWE-287 — Improper AuthenticationCWE-640 — Weak Password Recovery Mechanism for Forgotten Password5 documents4 sources
Severity
9.8CRITICALNVD
EPSS
0.4%
top 38.76%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Github.com Mattermost Mattermost-serverMattermost Server
Timeline
PublishedJun 19
Latest updateFeb 17

Description

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. A password-reset request was sometime sent to an attacker-provided e-mail address.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶NVDmattermost/mattermost_server3.10.0 — 3.10.2+1
▶Gogithub.com/mattermost_mattermost-server3.10.0+incompatible — 3.10.1+incompatible+3

🔴Vulnerability Details

4
OSV
Mattermost Server password reset email requests can be sent to attacker-provided email addresses in github.com/mattermost/mattermost-server↗2026-02-17
▶
OSV
Mattermost Server password reset email requests can be sent to attacker-provided email addresses↗2022-05-24
▶
GHSA
Mattermost Server password reset email requests can be sent to attacker-provided email addresses↗2022-05-24
▶
CVEList
CVE-2017-18908: An issue was discovered in Mattermost Server before 4↗2020-06-19
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CVE-2017-18908 — Improper Authentication | cvebase