What’s Vulnerable › Vulnerabilities
CVE-2023-50333: Lack of restriction to manage group names for freshly demoted guests
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-01-02 · updated 2026-06-17
- Weakness: CWE-284
Description
Mattermost fails to update the permissions of the current session for a user who was just demoted to guest, allowing freshly demoted guests to change group names.
Affected products
- Mattermost: before 8.1.7 — fixed in 8.1.7
How to fix
Upgrade to a fixed version: Mattermost 8.1.7. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2023-50333 or the next vulnerability affects your stack