Low 3.1Published Sep 19, 2025

CVE-2025-9081IDOR in board file download allows any user to download any file by UUID

Updated under an hour ago (Oct 26, 2026, 9:30 PM ET)

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It affects Mattermost and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Mattermost

Exploited in the last 30 days

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

CVSS: 3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Mattermost
NVD analysis: Analyzed
Record last updated: Sep 19, 2025
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Mattermost Mattermost mattermost:mattermost (from the name)	from 10.5.0 through 10.5.8; from 9.11.0 through 9.11.17; 10.11.0 not affected; 10.5.9 not affected; 9.11.18 not affected	CNA record
mattermost mattermost_server mattermost:mattermost_server	from 9.11.0 before 9.11.17; from 10.5.0 before 10.5.9	NVD

References

References

https://mattermost.com/security-updates	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.