UpHeron
All vulnerabilities

Servers and applications

CVE-2024-39274

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels

Severity
Medium 6.5
Published
1 Aug 2024
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.5.7, 9.7.6, 9.8.2
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost
  • From 9.5.0 before 9.5.7
  • From 9.7.0 before 9.7.6
  • From 9.8.0 before 9.8.2
  • Version 9.9.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2024-39274
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2024-39274