GHSA-gq3r-5833-5532

ghsaUSosv

Mattermost Fails to Validate File Paths

view advisory published 2025-08-21Licence: CC-BY-4.0

Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restricted admin users to install unauthorized custom plugins via path traversal in the import functionality, bypassing plugin signature enforcement and marketplace restrictions.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2025-36530US	medium4.9	0.49% (42nd)	—	2025-08-21
Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restri…

references

External citations — patches, advisories, analysis.

https://github.com/mattermost/mattermostPACKAGE
https://mattermost.com/security-updatesWEB
https://nvd.nist.gov/vuln/detail/CVE-2025-36530ADVISORY
https://pkg.go.dev/vuln/GO-2025-3901WEB

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