HIGHCVE-2026-6346Published Modified CNA Mattermost
CVE-2026-6346: Sensitive credentials exposed in plaintext in Mattermost support packets
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to sanitize sensitive configuration fields before including them in support packet generation, which allows a Mattermost System Admin or any party with access to a support packet to obtain sensitive credentials in plaintext via downloading a support packet from the System Console.. Mattermost Advisory ID: MMSA-2026-00607
Metrics
- CVSS v3.1
- 8.7
- Severity
- HIGH
- Fixed in
- 10.11.14
- Affected Products
- 1
Fix available
10.11.1411.4.411.5.211.6.0
Affected packages
- Mattermost / Mattermost≤ 11.5.1 · ≤ 10.11.13 · ≤ 11.4.3Fixed in 11.6.0, 11.5.2, 10.11.14, 11.4.4
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:NReferences