CVE-2024-43780: Mattermost allows guest user with read access to upload files to a channel

August 22, 2024

Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.0, 9.8.x <= 9.8.2 fail to enforce permissions which allows a guest user with read access to upload files to a channel.

References

github.com/advisories/GHSA-2jhx-w3vc-w59g
github.com/mattermost/mattermost
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2024-43780

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