CVE-2024-21848: Users maintain access to active call after being removed from a channel

3.1 CVSS

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

Classification

CVE ID: CVE-2024-21848

CVSS Base Severity: LOW

CVSS Base Score: 3.1

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

Problem Types

CWE-284: Improper Access Control

Affected Products

Vendor: Mattermost

Product: Mattermost

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.13% (probability of being exploited)

EPSS Percentile: 29.22% (scored less or equal to compared to others)

EPSS Date: 2025-03-28 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: partial

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2024-21848
https://mattermost.com/security-updates

Timeline