GHSA-f72g-52v7-mg3p

ghsaUSosv

Mattermost boards plugin fails to restrict download access to files

view advisory published 2025-09-19Licence: CC-BY-4.0

Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2025-9081USmedium6.5—
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file dow…
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references

External citations — patches, advisories, analysis.

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