CVE-2025-27933

Unauthorized Private-to-Public Channel Conversion

State: Published
Severity: 5.4 Medium
Published: Mar 21, 2025
Updated: Mar 21, 2025
Reserved: Mar 20, 2025

Description

Mattermost versions 10.4.x <= 10.4.2, 10.3.x <= 10.3.3, 9.11.x <= 9.11.8 fail to fail to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	Mattermost

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
MattermostMattermost	10.4.0 through 10.4.2Affected 10.3.0 through 10.3.3Affected 9.11.0 through 9.11.8Affected 10.5.0Not affected 10.4.3Not affected 10.3.4Not affected 9.11.9Not affected

References

https://mattermost.com/security-updates

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