CVE-2026-6739
Essential information
- Published
- 12/06/2026 19:16
- Modified
- 12/06/2026 17:16
- Author
- The MITRE Corporation
- Creator
- The MITRE Corporation
- CVSS
- 7.2 HIGH (v3.1)
- CISA KEV
- No
- CWE
- CWE-863
- CVSS vector
-
—
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H—
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- NETWORK
- Attack complexity
- LOW
- Privileges required
- HIGH
- User interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality impact
- HIGH
- Integrity impact
- HIGH
- Availability impact
- High
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Attack requirements
- —
- Privileges required
- —
- User interaction
- —
- Confidentiality (V)
- —
- Confidentiality (S)
- —
- Integrity (V)
- —
- Integrity (S)
- —
- Availability (V)
- —
- Availability (S)
- —
- Exploit maturity
- —
Description
Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-in role permissions via the role patch API.. Mattermost Advisory ID: MMSA-2026-00656
NVD status
- Status
- Received — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- [email protected]
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| mattermost / mattermost | cpe:2.3:a:mattermost:mattermost:11.6.0-11.6.1:*:*:*:*:*:*:* |
| mattermost / mattermost | cpe:2.3:a:mattermost:mattermost:11.5.0-11.5.4:*:*:*:*:*:*:* |
| mattermost / mattermost | cpe:2.3:a:mattermost:mattermost:10.11.0-10.11.16:*:*:*:*:*:*:* |