Is CVE-2026-93850 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-93850?

CVE-2026-93850 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-93850

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 bind the volume of text extracted from an uploaded PDF which allows an authenticated user to exhaust server memory and cause a denial of service via a crafted PDF whose compressed content stream expands into a very large amount of text.. Mattermost Advisory ID: MMSA-2026-00769