CVE-2022-2406

MEDIUM

Mattermost <= 6.7.0 - Authenticated Denial of Service via Slack Import REST API

Title source: llm

Description

The legacy Slack import feature in Mattermost version 6.7.0 and earlier fails to properly limit the sizes of imported files, which allows an authenticated attacker to crash the server by importing large files via the Slack import REST API.

References (1)

Core 1

Core References

Vendor Advisory x_refsource_misc

https://mattermost.com/security-updates/

Scores

CVSS v3 4.3

EPSS 0.0043

EPSS Percentile 62.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-770 CWE-400

Status published

Products (4)

mattermost/mattermost 6.6.0

mattermost/mattermost 6.6.1

mattermost/mattermost 6.7.0

mattermost/mattermost < 6.3.8

Published Jul 14, 2022

Tracked Since Feb 18, 2026