CVE-2023-2808

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: May 29, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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