CVE-2017-18906
HIGH8.1EPSS 0.21%Mattermost Server vulnerable to user account takeover when Single Sign-On OAuth2 is used
Published: 5/24/2022Modified: 2/19/2026
Description
An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2, when Single Sign-On OAuth2 is used. An attacker could claim somebody else's account.
Affected packages (2)
- Go/github.com/mattermost/mattermost-serverfrom 0, < 3.9.2-0.20170714134023-b17fca0d5ee7
- Go/github.com/mattermost/mattermost-server>= 3.10.0+incompatible, < 3.10.2+incompatible
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
References (7)
- ADVISORYhttps://github.com/advisories/GHSA-fpcr-4rr5-hpcp
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2017-18906
- PATCHhttps://github.com/mattermost/mattermost
- WEBhttps://github.com/mattermost/mattermost/commit/259ad46f30d0fac2f7c5c14f3b76b2170f7e90c7
- WEBhttps://github.com/mattermost/mattermost/commit/b17fca0d5ee7557e3df1cf1d1da8bd749859e35f
- WEBhttps://github.com/mattermost/mattermost/commit/fbc170733e86f09b46ba754dd03304733d2f482f
- WEBhttps://mattermost.com/security-updates