MEDIUM 4.3 NVD

CVE-2026-18256

Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to properly restrict private teams from public team search res

Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to properly restrict private teams from public team search results, which allows an authenticated user without permission to list private teams to disclose the ID, name, and display name of private teams via a modified team search request. Mattermost Advisory ID: MMSA-2026-00748

References

https://mattermost.com/security-updates

Published: 2026-10-16 · Source: NVD · Feed updated: 2026-10-16

This medium severity vulnerability with a CVSS score of 4.3 was published on 2026-10-16 via NVD.

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