CVE-2025-58084

Mattermost Desktop App crashes when clicking on malformed external URL

State: Published
Severity: 3.5 Low
Published: Oct 13, 2025
Updated: Oct 14, 2025
Reserved: Sep 11, 2025

Description

Mattermost Desktop App versions <= 5.13.0 fail to validate URLs external to the configured Mattermost servers, allowing an attacker on a server the user has configured to crash the user's application by sending the user a malformed URL.

Scores

CVSS	Score	Vector	Source
3.1	3.5 Low	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L	Mattermost

Weaknesses

CWE-1287 Improper Validation of Specified Type of Input

Affected Products

Product	Versions
MattermostMattermost	5.13.0 and earlierAffected 5.13.1Not affected

References

https://mattermost.com/security-updates

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