Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
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 |
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Vendor Solution
Update Mattermost to versions 11.11.0, 11.10.1, 11.7.10, 11.9.2, 11.8.6 or higher.
Tracking
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No advisories yet.
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
Fri, 16 Oct 2026 07:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to reject OAuth application sessions in the account type switch endpoint, which allows an attacker with a valid OAuth bearer token for a target user to permanently take over that user's SSO-backed account by setting an attacker-controlled password and detaching the account from its identity provider via a crafted request to POST /api/v4/users/login/switch.. Mattermost Advisory ID: MMSA-2026-00758 | |
| Title | Mattermost fails to reject OAuth application sessions in account type switch, allowing account takeover via bearer token | |
| Weaknesses | CWE-863 | |
| References |
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| Metrics |
cvssV3_1
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Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-10-16T07:11:29.552Z
Reserved: 2026-08-06T09:52:03.711Z
Link: CVE-2026-19076
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-16T08:17:13.177
Modified: 2026-10-16T08:17:13.177
Link: CVE-2026-19076
Redhat
No data.
OpenCVE Enrichment
No data.