PT-2026-25686

CVE-2026-26246

Published

2026-02-13

Updated

2026-07-30

Description by

CVSS 3.1

4.3

Medium

MetricsAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Mattermost versions 10.11.0 through 10.11.10 Mattermost versions 11.2.0 through 11.2.2 Mattermost versions 11.3.0

Description The software does not properly limit memory allocation when processing PSD image files. This allows an authenticated attacker to exhaust server memory and cause a denial of service by uploading a specially crafted PSD file.

Recommendations Update Mattermost to a version beyond 10.11.10. Update Mattermost to a version beyond 11.2.2. Update Mattermost to a version beyond 11.3.0.

Exploitability

Exploit

Fix

Impacts

Researchers

Juho Forsén

Vendors

Affected products

Weakness enumeration

CWE-789: Memory Allocation with Excessive Size Value

CWE-400: Uncontrolled Resource Consumption

Related identifiers