GHSA-hc6v-386m-93pq

ghsaUSosv

Mattermost fails to properly enforce access controls for guest users

view advisory published 2025-05-30Licence: CC-BY-4.0

Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to properly enforce access controls for guest users accessing channel member information, allowing authenticated guest users to view metadata about members of public channels via the channel members API endpoint.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2025-1792US	—OT elevated	0.25% (16th)	—	2025-05-30
Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to properly enforce access controls for guest users accessing channel member information, allowing au…

references

External citations — patches, advisories, analysis.

https://github.com/mattermost/mattermostPACKAGE
https://github.com/mattermost/mattermost/commit/c23f44fe8ed02f71d506f99adc30ad34c58c89d1WEB
https://mattermost.com/security-updatesWEB
https://nvd.nist.gov/vuln/detail/CVE-2025-1792ADVISORY

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