Is CVE-2026-1628 actively exploited?

CVE-2026-1628 has no public evidence of in-the-wild exploitation as of 2026-03-05.

What is the CVSS score for CVE-2026-1628?

CVE-2026-1628 has a CVSS score of 4.6 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

How do I patch CVE-2026-1628?

Patch guidance is available from mattermost security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-1628.

Which products are affected by CVE-2026-1628?

1 product: mattermost mattermost desktop.

CVE-2026-1628 - remediation guidance & executive summary

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: low
User Action: required
Scope: unchanged
Confidentiality: low
Integrity: low
Availability: none
Weaknesses: CWE-829

Metadata

Primary Vendor: MATTERMOST
Published: 3/2/2026
Last Modified: 3/5/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mattermost : mattermost_desktop

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-1628. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-1628

View on NIST NVD

CVE-2026-1628 vulnerability