UpHeron
All vulnerabilities

Servers and applications

CVE-2019-20887

An issue was discovered in Mattermost Server before 5.7.1, 5.6.4, 5.5.3, and 4.10.6. It does not honor flags API permissions when deciding whether a user can receive intra-team posts.

Severity
Medium 4.3
Published
19 Jun 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.10.6, 5.5.3, 5.6.4, 5.7.1
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • Every version before 4.10.6
  • From 5.5.0 before 5.5.3
  • From 5.6.0 before 5.6.4
  • From 5.7.0 before 5.7.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-20887
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-20887