PT-2026-57805 · Mattermost · Mattermost

0X7Oda7123

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Published

2026-07-13

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Updated

2026-07-13

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CVE-2026-9820

CVSS v3.1

3.8

Low

VectorAV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Mattermost versions 11.7.x <= 11.7.2, 10.11.x <= 10.11.19 fail to sanitize team objects returned by the scheme teams endpoint, which allows a user with the User Manager role to obtain invite links for private teams and use them to join or share access to those teams via the scheme teams API endpoint.. Mattermost Advisory ID: MMSA-2026-00671

Fix

Missing Authorization

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Weakness Enumeration

Related Identifiers

CVE-2026-9820

Affected Products

Mattermost