GHSA-wgvp-jj4w-88hf

ghsaUSosv

Mattermost Incorrect Authorization vulnerability

view advisory published 2025-06-30Licence: CC-BY-4.0

Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly validate channel membership when retrieving playbook run metadata, allowing authenticated users who are playbook members but not channel members to access sensitive information about linked private channels including channel name, display name, and participant count through the run metadata API endpoint.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2025-47871USmedium5.4OT elevated—
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly validate channel membership when retrieving playbook…
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references

External citations — patches, advisories, analysis.

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