Disclosure summary
Mattermost versions 11.9.x
Source-reported weakness categories
CWE-862
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-8821
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| mattermost | mattermost_server | * {"versionStartIncluding":"11.9.0","versionEndExcluding":"11.9.1"} |
Original records & references
- NIST NVD record
- CVE Program record
- mattermost.com — Vendor Advisory
PUBLISHED 2026-09-14T07:17:06-04:00
MODIFIED 2026-10-07T11:43:05-04:00
INGESTED 2026-10-10T20:25:12-04:00