CVE-2024-2447: Mattermost fails to authenticate the source of certain types of post actions

April 5, 2024

Mattermost versions 8.1.x before 8.1.11, 9.3.x before 9.3.3, 9.4.x before 9.4.4, and 9.5.x before 9.5.2 fail to authenticate the source of certain types of post actions, allowing an authenticated attacker to create posts as other users via a crafted post action.

References

github.com/advisories/GHSA-wp43-vprh-c3w5
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2024-2447

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