CVE-2025-58084 - CVE House
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Status published Low CVE-2025-58084

Mattermost Desktop App crashes when clicking on malformed external URL

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Doyensec

References

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Affected Vendor

Affected Software

Mattermost
Vulnerable Versions:
0, 5.13.1

Timeline

Official Publish: October 13th, 2025
Last Modified: October 14th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-1287

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.