Improper Access Control

2024-08-0809:35:08

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

vulnerability

access control

mattermost server

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

6.8

Confidence

High

EPSS

Percentile

14.7%

JSON

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is caused due to a failure to properly validate synced reactions, when shared channels are enabled. This allows a malicious remote attacker to create arbitrary reactions on arbitrary posts.