Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-20796

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
13/02/2026
Last modified:
23/02/2026

Description

Mattermost versions 10.11.x

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 3.10 LOW
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x
3.10
Severity 3.x
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* 10.11.0 (including) 10.11.10 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools