CVE-2024-21848

LOW3.1EPSS 0.23%

Mattermost Server Improper Access Control

Published: 4/5/2024Modified: 2/4/2026

Description

Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel

Affected packages (6)

Bitnami/mattermost>= 8.1.0, < 8.1.11
Go/github.com/mattermost/mattermost-serverfrom 0
Go/github.com/mattermost/mattermost-server/v5from 0
Go/github.com/mattermost/mattermost-server/v6from 0
Go/github.com/mattermost/mattermost/server/v8from 0, < 8.1.11
Go/github.com/mattermost/mattermost/server/v8from 0

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
osv	CVSS 3.1	LOW3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

References (4)

ADVISORYhttps://github.com/advisories/GHSA-xp9j-8p68-9q93
ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2024-21848
PATCHhttps://github.com/mattermost/mattermost
WEBhttps://mattermost.com/security-updates