CVE-2023-2792

Ephemeral messages return private channel contents in permalink previews

State: Published
Severity: 6.5 Medium
Published: Jun 16, 2023
Updated: Dec 6, 2024
Reserved: May 18, 2023

Description

Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	Mattermost

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
MattermostMattermost	7.1.9 and earlierAffected 7.8.4 and earlierAffected 7.9.3 and earlierAffected 7.10.0Affected 7.1.10Not affected 7.9.4Not affected 7.8.5Not affected 7.10.1Not affected

References

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

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