CVE-2026-7521
EUVD-2026-4985228.07.2026, 15:17
Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mattermost | mattermost_server | 10.11.0 ≤ 𝑥 < 10.11.21 |
| mattermost | mattermost_server | 11.6.0 ≤ 𝑥 < 11.6.6 |
| mattermost | mattermost_server | 11.7.0 ≤ 𝑥 < 11.7.4 |
| mattermost | mattermost_server | 11.8.0 ≤ 𝑥 < 11.8.1 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| mattermost | mattermost | 𝑥 ≤ 11.8.0 | CNA |
| mattermost | mattermost | 11.7.0 ≤ 𝑥 ≤ 11.7.3 | CNA |
| mattermost | mattermost | 11.6.0 ≤ 𝑥 ≤ 11.6.5 | CNA |
| mattermost | mattermost | 10.11.0 ≤ 𝑥 ≤ 10.11.20 | CNA |
References