CVE-2024-43780

MEDIUM

Mattermost 9.5.0-9.5.7 9.8.0-9.8.2 9.9.0-9.9.1 9.10.0 - Unauthenticated File Upload via Guest User Channel Access

Title source: llm

Description

Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.0, 9.8.x <= 9.8.2 fail to enforce permissions which allows a guest user with read access to upload files to a channel.

References (1)

Core 1

Core References

Vendor Advisory

https://mattermost.com/security-updates

Scores

CVSS v3 4.3

EPSS 0.0021

EPSS Percentile 43.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-284

Status published

Products (3)

mattermost/mattermost 9.5.0 - 9.5.8Go

mattermost/mattermost_server 9.10.0

mattermost/mattermost_server 9.5.0 - 9.5.8

Published Aug 22, 2024

Tracked Since Feb 18, 2026