CVE-2026-20719
EUVD-2026-1548525.03.2026, 17:16
Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to prevent rendering of external SVGs on link embeds which allows unauthenticated users to crash the Mattermost webapp and desktop app via creating an issue or PR on GitHub.. Mattermost Advisory ID: MMSA-2026-00595Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mattermost | mattermost_server | 10.11.0 ≤ 𝑥 < 10.11.12 |
| mattermost | mattermost_server | 11.2.0 ≤ 𝑥 < 11.2.4 |
| mattermost | mattermost_server | 11.3.0 ≤ 𝑥 < 11.3.2 |
| mattermost | mattermost_server | 11.4.0 ≤ 𝑥 < 11.4.1 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| mattermost | mattermost | 𝑥 ≤ 11.4.0 | CNA |
| mattermost | mattermost | 11.3.0 ≤ 𝑥 ≤ 11.3.1 | CNA |
| mattermost | mattermost | 11.2.0 ≤ 𝑥 ≤ 11.2.3 | CNA |
| mattermost | mattermost | 10.11.0 ≤ 𝑥 ≤ 10.11.11 | CNA |
Common Weakness Enumeration
References