Mattermost versions 10.1.x <= 10.1.2, 10.0.x <= 10.0.2, 9.11.x <= 9.11.4, 9.5.x <= 9.5.12 fail to limit the file size for slack import file uploads which allows a user to cause a DoS via zip bomb by importing data in a team they are a team admin.
Advisories
Source ID Title
EUVD EUVD EUVD-2024-3533 Mattermost versions 10.1.x <= 10.1.2, 10.0.x <= 10.0.2, 9.11.x <= 9.11.4, 9.5.x <= 9.5.12 fail to limit the file size for slack import file uploads which allows a user to cause a DoS via zip bomb by importing data in a team they are a team admin.
Github GHSA Github GHSA GHSA-v647-h8jj-fw5r Mattermost Data Amplification vulnerability
Fixes

Solution

Update Mattermost to versions 10.2.0, 10.1.3, 10.0.3, 9.11.5, 9.5.13 or higher.


Workaround

No workaround given by the vendor.

References
History

Tue, 30 Sep 2025 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00076}

epss

{'score': 0.00082}


Mon, 16 Dec 2024 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 16 Dec 2024 08:15:00 +0000

Type Values Removed Values Added
Description Mattermost versions 10.1.x <= 10.1.2, 10.0.x <= 10.0.2, 9.11.x <= 9.11.4, 9.5.x <= 9.5.12 fail to limit the file size for slack import file uploads which allows a user to cause a DoS via zip bomb by importing data in a team they are a team admin.
Title Zipbomb DoS via Missing Slack Import Validation
Weaknesses CWE-409
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2024-12-16T16:03:22.685Z

Reserved: 2024-12-11T10:11:03.778Z

Link: CVE-2024-54682

cve-icon Vulnrichment

Updated: 2024-12-16T16:03:15.639Z

cve-icon NVD

Status : Analyzed

Published: 2024-12-16T08:15:05.513

Modified: 2025-09-30T15:50:38.853

Link: CVE-2024-54682

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-13T11:22:18Z