UpHeron
All vulnerabilities

Servers and applications

CVE-2017-18906

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.

Severity
High 8.1
Published
19 Jun 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
3.9.2, 3.10.2
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • Every version before 3.9.2
  • From 3.10.0 before 3.10.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-18906
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-18906