CVE-2026-9597
EUVD-2026-4331513.07.2026, 09:16
Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4 fail to verify whether a guest account is deactivated before creating a session in the magic-link token login path, which allows a deactivated guest user to obtain a fully functional session via a magic-link token issued prior to deactivation.. Mattermost Advisory ID: MMSA-2026-00681Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mattermost | mattermost_server | 11.6.0 ≤ 𝑥 < 11.6.5 |
| mattermost | mattermost_server | 11.7.0 ≤ 𝑥 < 11.7.3 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| mattermost | mattermost | 11.7.0 ≤ 𝑥 ≤ 11.7.2 | CNA |
| mattermost | mattermost | 11.6.0 ≤ 𝑥 ≤ 11.6.4 | CNA |
Common Weakness Enumeration
References