CVE-2021-37864 | BDVDB-2026-167993 Detail

MattermostMattermost

Description#

Mattermost 6.1 and earlier fails to sufficiently validate permissions while viewing archived channels, which allows authenticated users to view contents of archived channels even when this is denied by system administrators by directly accessing the APIs.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-284 Improper Access Control

References#

https://mattermost.com/security-updates/

Exploit#

No public exploit known

History#

Version 12022-01-18Record published in the CVE List.
Version 22024-12-06Most recent update recorded in the CVE List.

Published

Published: 2022-01-18
Last modified: 2024-12-06

Vendor information

Vendor: Mattermost
Product: Mattermost

All Mattermost vulnerabilities

Score

2.6 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 48.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Improper Access Control

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 6.2
Fixed
6.2

Scoring System

CVSS v4.0

Not available

CVSS v3.1

2.6 Low

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	Low
User Interaction	Required
Scope	Unchanged
Confidentiality	Low
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).