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CVE-2025-58084

Mattermost Desktop App crashes when clicking on malformed external URL

Published: Oct 13, 2025Updated: Oct 29, 2025 Sources: CVE List NVDCWE-1287
NVD MITRE
3.5CVSSLOW
EPSS Score
0.3%
Top 81.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-1287

Affected Products

MattermostMattermost
On-premWeb App
Communications / messaging-chat
mattermost desktopmattermost
On-premDesktop App
Communications / messaging-chat
mattermostcommercialUSCommunications

Exploitability

Official Patch Available

References

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

Timeline

Published
Oct 13, 2025
Last Updated
Oct 29, 2025

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