EUVD-2026-16240

| CVE-2026-3113 MEDIUM
2026-03-26 Mattermost GHSA-4765-v66x-rqx7
5.0
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Patch Released
Apr 01, 2026 - 02:30 nvd
Patch available
Analysis Generated
Mar 26, 2026 - 16:45 vuln.today
EUVD ID Assigned
Mar 26, 2026 - 16:45 euvd
EUVD-2026-16240
CVE Published
Mar 26, 2026 - 16:18 nvd
MEDIUM 5.0

Tags

Information Disclosure

Description

Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on downloaded bulk export which allows other local users on the server to be able to read contents of the bulk export.. Mattermost Advisory ID: MMSA-2026-00593

Analysis

Mattermost bulk export functionality fails to apply proper file permissions, allowing unprivileged local users on affected servers to read sensitive exported data. Mattermost versions 11.4.0, 11.3.x through 11.3.1, 11.2.x through 11.2.3, and 10.11.x through 10.11.11 are vulnerable (CVE-2026-3113, MMSA-2026-00593). …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review and tighten file/resource permissions.

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Priority Score

25
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +25
POC: 0

Vendor Status

Debian

Bug #823556
mattermost-server
Release Status Fixed Version Urgency
open - -

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EUVD-2026-16240 vulnerability details – vuln.today
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