🛡️ CVE-2023-43754
🟡 CVSS 4.3 — Medium ✅ No Known Exploit CWE-200 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Mattermost fails to check whether the  “Allow users to view archived channels”  setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the “Allow users to view archived channels” setting is disabled. 

Details

Severity Medium
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-200
Public Exploit âś… No
Source NVD
Published 2023-11-27
Updated 2026-06-08
Modified 2026-02-04
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/mattermost/mattermost-server/v6 — —
github.com/mattermost/mattermost/server/v8 — —
mattermost — —

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