UpHeron
All vulnerabilities

Servers and applications

CVE-2018-21263

An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different user's account via a crafted SAML response.

Severity
High 8.8
Published
19 Jun 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.5.2, 4.6.2
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • Every version before 4.5.2
  • From 4.6.0 before 4.6.2
  • Version 4.7.0-rc1
  • Version 4.7.0-rc2
  • Version 4.7.0-rc3
  • Version 4.7.0-rc4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-21263
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-21263