What’s Vulnerable › Vulnerabilities
CVE-2024-47145: Unauthorized access on archived channels via file links
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-09-26 · updated 2026-06-17
- Weakness: CWE-284
Description
Mattermost versions 9.5.x <= 9.5.8 fail to properly authorize access to archived channels when viewing archived channels is disabled, which allows an attacker to view posts and files of archived channels via file links.
Affected products
- Mattermost: from 9.5.0 before 9.5.9 — fixed in 9.5.9
How to fix
Upgrade to a fixed version: Mattermost 9.5.9. Check the vendor advisory for mitigations.
References
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