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CVE-2026-6334: mattermost server from 10.11.0 (inclusive), before 10.11.14 (exclusive), from 11.5.0 (inclusive), before 11.5.2…

CVE-2026-6334. CVSS 3.1 base score 3.8 (LOW, NVD). EPSS 0.002 (percentile 0.09141), scored 13-Oct-2026.

Affected technology

mattermost server · from 10.11.0 (inclusive), before 10.11.14 (exclusive)
mattermost

mattermost server · from 11.5.0 (inclusive), before 11.5.2 (exclusive)
mattermost

Mattermost · 11.5.0 through 11.5.1, 10.11.0 through 10.11.13
Mattermost

Description’s affected range: versions 11.5.x <= 11.5.1

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · High privileges required · User interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · High privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 3.1/10) rates confidentiality and integrity impact as low; availability impact as none. NVD’s CVSS 3.1 assessment (base score 3.8/10) rates confidentiality and integrity impact as low; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published

CWE
CWE-305
CCR priority
15.3 /100 (P5)
CVSS 3.1
3.8 /10 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N · NVD
EPSS
0.002 · percentile 0.09141 · 2026-10-13
KEV
no

Provenance

Stable permalink: https://cybercodered.org/item/cve-cve-2026-6334.html