UpHeron
All vulnerabilities

Servers and applications

CVE-2017-18871

An issue was discovered in Mattermost Server before 4.5.0, 4.4.5, 4.3.4, and 4.2.2. It allows attackers to cause a denial of service (application crash) via an @ character before a JavaScript field name.

Severity
High 7.5
Published
19 Jun 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.2.2, 4.3.4, 4.4.5
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • Version 4.5.0-rc4
  • Version 4.5.0-rc3
  • Version 4.5.0-rc2
  • Version 4.5.0-rc1
All 7 release lines
  • Every version before 4.2.2
  • From 4.3.0 before 4.3.4
  • From 4.4.0 before 4.4.5
  • Version 4.5.0-rc1
  • Version 4.5.0-rc2
  • Version 4.5.0-rc3
  • Version 4.5.0-rc4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-18871
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-18871