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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2026-10600

Denial of service via unbounded document content extraction in Mattermost Server

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Status
Published
Published
Updated
Assigning organization
Mattermost

Description

Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to bound the time and resource consumption of server-side document content extraction which allows an authenticated user with file-upload permission to degrade file uploads for all users on the server via repeatedly uploading small documents that are cheap to upload but expensive to extract, saturating the shared extraction worker pool.. Mattermost Advisory ID: MMSA-2026-00694

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

  • 11.8.0 to ≤ 11.8.0affected
  • 11.7.0 to ≤ 11.7.3affected
  • 11.6.0 to ≤ 11.6.5affected
  • 10.11.0 to ≤ 10.11.20affected
  • 11.9.0unaffected
  • 11.8.1unaffected
  • 11.7.4unaffected
  • 11.6.6unaffected
  • 10.11.21unaffected

References