UpHeron
All vulnerabilities

Servers and applications

CVE-2019-20880

An issue was discovered in Mattermost Server before 5.8.0, 5.7.2, 5.6.5, and 4.10.7. It allows attackers to cause a denial of service (memory consumption) via OpenGraph.

Severity
High 7.5
Published
19 Jun 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.10.7, 5.6.5, 5.7.2
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • Version 5.8.0-rc4
  • Version 5.8.0-rc3
  • Version 5.8.0-rc2
  • Version 5.8.0-rc1
All 7 release lines
  • Every version before 4.10.7
  • From 5.6.0 before 5.6.5
  • From 5.7.0 before 5.7.2
  • Version 5.8.0-rc1
  • Version 5.8.0-rc2
  • Version 5.8.0-rc3
  • Version 5.8.0-rc4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-20880
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-20880