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
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mattermost Mattermost
Default version status: unaffected
11.9.0 to ≤ 11.9.1affected11.8.0 to ≤ 11.8.5affected11.7.0 to ≤ 11.7.10affected11.10.0 to ≤ 11.10.1affected11.11.0unaffected11.9.2unaffected11.8.6unaffected11.7.11unaffected11.10.2unaffected