Mattermost failed to properly validate synced reactions

2024-08-0115:32:21

CWE-284

GitHub Advisory Database

github.com

mattermost

sync reactions

validation

vulnerability

shared channels

software security

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

Percentile

14.7%

JSON

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts

Affected configurations

Vulners

Node

mattermostmattermostMatch9.9.0

mattermostmattermostRange9.5.0–9.5.7

VendorProductVersionCPE
mattermostmattermost9.9.0cpe:2.3:a:mattermost:mattermost:9.9.0:*:*:*:*:*:*:*
mattermostmattermost*cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*