Improper file ownership validation in the Boards API allows unauthorised file access
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Mattermost | Mattermost | unaffected |
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Configuration 1 [-]
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No data.
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| Mattermost | Mattermost |
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Vendor Solution
Update Mattermost to versions 11.7.0, 11.6.1, 11.5.4, 11.4.5, 10.11.15 or higher.
| Source | ID | Title |
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Github GHSA |
GHSA-7pf2-9c95-w332 | Mattermost doesn't validate file ownership and access control |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.149% probability within 30 days)
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| https://mattermost.com/security-updates |
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Mattermost mattermost Server
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
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Mattermost mattermost Server
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| First Time appeared |
Mattermost
Mattermost mattermost |
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Mattermost
Mattermost mattermost |
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| Metrics |
ssvc
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| Description | Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs.. Mattermost Advisory ID: MMSA-2026-00620 | |
| Title | Improper file ownership validation in the Boards API allows unauthorised file access | |
| Weaknesses | CWE-639 | |
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| Metrics |
cvssV3_1
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