CVE-2026-11993
EUVD-2026-7736114.09.2026, 11:17
Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to properly enforce the limit of concurrent files being processed and handled failed files, which allows a user with permission to upload files to spawn more goroutines than intended and block the indexing of other files via uploading heavy files constantly to the server.. Mattermost Advisory ID: MMSA-2026-00696Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mattermost | mattermost_server | 10.11.0 ≤ 𝑥 < 10.11.23 |
| mattermost | mattermost_server | 11.7.0 ≤ 𝑥 < 11.7.8 |
| mattermost | mattermost_server | 11.8.0 ≤ 𝑥 < 11.8.5 |
| mattermost | mattermost_server | 11.9.0 ≤ 𝑥 < 11.9.1 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources
(CNA/ADP records, vendor advisories, Enginsight analysis).
| Vendor | Product | Version | Source |
|---|---|---|---|
| mattermost | mattermost | 11.9.0 | CNA |
| mattermost | mattermost | 11.8.0 ≤ 𝑥 ≤ 11.8.4 | CNA |
| mattermost | mattermost | 11.7.0 ≤ 𝑥 ≤ 11.7.7 | CNA |
| mattermost | mattermost | 10.11.0 ≤ 𝑥 ≤ 10.11.22 | CNA |
References