Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattermost | Mattermost | unaffected |
|
No data.
No data.
No data.
Project Subscriptions
No data.
No advisories yet.
Solution
Update Mattermost to versions 11.10.0, 11.9.1, 11.8.5, 11.7.8, 10.11.23 or higher.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
Mon, 14 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 Fail to sanitize Team objects returned by the data retention teams endpoint which allows an authenticated user holding only the read-only Data Retention Policy permission to obtain a private team's secret invite_id and email, and use it to join the team without authorization, via GET /api/v4/data_retention/policies/{policy_id}/teams.. Mattermost Advisory ID: MMSA-2026-00702 | |
| Title | Data Retention Teams Endpoint Leaks Private Team Invite ID | |
| Weaknesses | CWE-863 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
MITRE
Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-09-14T21:21:47.436Z
Reserved: 2026-09-14T21:20:45.375Z
Link: CVE-2026-91181
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-14T22:16:59.643
Modified: 2026-09-14T22:16:59.643
Link: CVE-2026-91181
Redhat
No data.
OpenCVE Enrichment
No data.