Vulnerabilities

CVSS

5.4 Medium

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Risk score

43.2

Published

2026-07-13

Status

Published

Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to restrict the group_constrained channel flag to public and private channels that support group synchronization, which allows an ordinary group or direct message member to remove all participants from the conversation via the channel patch API.. Mattermost Advisory ID: MMSA-2026-00688

Weaknesses

CWE-862

Coverage 1

vulnerability

Multiples vulnérabilités dans les produits Mattermost (15 juin 2026)

Multiple vulnerabilities have been discovered in Mattermost Server, potentially allowing an attacker to cause a security issue not specified by the vendor. These vulnerabilities could lead to data integrity and confident…

CERT-FR · Jun 15, 2026 Medium

CVE-2026-10085CVE-2026-10103CVE-2026-10106vulnerabilitymattermostsecurity

All articles mentioning it

Advisories and references

• mattermost.com/security-updates