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CVE-2026-1628

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CVE-2026-1628

Published: Mar 2, 2026

Modified: Mar 2, 2026

PUBLISHED

CVSS v3.1

4.6

MEDIUM

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

VendorProductVersions

Mattermost

Mattermost

affected
0 - <= 5.13.3
unaffected
5.13.4.0

Weaknesses (CWE)

CWE-829

CVSS v3.1 Details

CVSS v3.1 Vector

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

References

MMSA-2026-00596
vendor-advisory

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