CVE-2026-1628

MEDIUM EPSS 3.4%

Published Mar 2, 20264mo ago · Modified Mar 5, 20263mo ago

4.6 CVSS 3.1

Medium

Published Mar 2, 2026 4mo ago

Last Modified Mar 5, 2026 3mo ago

Description

Mattermost Desktop App versions <=5.13.3 fail to attach listeners restricting navigation to external sites within the Mattermost app which allows a malicious server to expose preload script functionality to untrusted servers via having a user open an external link in their Mattermost server. Mattermost Advisory ID: MMSA-2026-00596

CVSS Details

Base Score

4.6

Exploitability

2.1

Impact

2.5

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction Required

Scope Unchanged

Confidentiality Low

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

3.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-829

Affected Products 1

Vendor	Product	Version	Range
mattermost	mattermost_desktop	*	<5.13.4

References 1

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

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.