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
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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History
Wed, 07 Oct 2026 17:00:00 +0000
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| First Time appeared |
Mattermost mattermost Server
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost mattermost Server
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Tue, 15 Sep 2026 20:30:00 +0000
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|---|---|---|
| Metrics |
ssvc
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Tue, 15 Sep 2026 10:30:00 +0000
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| First Time appeared |
Mattermost
Mattermost mattermost |
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| Vendors & Products |
Mattermost
Mattermost mattermost |
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
|
Status: PUBLISHED
Assigner: Mattermost
Published: 2026-09-14T21:21:47.436Z
Updated: 2026-09-16T03:56:15.095Z
Reserved: 2026-09-14T21:20:45.375Z
Link: CVE-2026-91181
Updated: 2026-09-15T19:15:37.277Z
Status : Analyzed
Published: 2026-09-14T22:16:59.643
Modified: 2026-10-07T16:49:26.633
Link: CVE-2026-91181
No data.