Is CVE-2026-96260 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-96260?

CVE-2026-96260 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-96260

Description

Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to enforce a request body size limit during CSRF validation of plugin requests which allows an authenticated user to exhaust server memory and cause a denial of service via a large request body sent to a plugin endpoint.. Mattermost Advisory ID: MMSA-2026-00775