CVE-2019-20846

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

An issue was discovered in Mattermost Server before 5.18.0. It has weak permissions for server-local file storage.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jun 19, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2019

CVE-2019-208475.3An issue was discovered in Mattermost Server before 5.18.0. An attacker can send a user_typing WebSocket event to any channel.CVE-2019-208487.5An issue was discovered in Mattermost Mobile Apps before 1.26.0. The Quick Reply feature mishandles crafted replies.CVE-2019-208495.3An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout.CVE-2019-20858.8In libxaac there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additionaCVE-2019-208505.3An issue was discovered in Mattermost Mobile Apps before 1.26.0. A view cache can persist on a device after a logout.CVE-2019-208519.1An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to oCVE-2019-208527.5An issue was discovered in Mattermost Mobile Apps before 1.26.0. Local logging is not blocked for sensitive information (e.g., server addresCVE-2019-208539.8An issue was discovered in Mattermost Packages before 5.16.3. A Droplet could allow Internet access to a service that has a remote code execCVE-2019-208547.5An issue was discovered in Mattermost Server before 5.17.0. It allows remote attackers to cause a denial of service (client-side applicationCVE-2019-208557.5An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (CVE-2019-208569.8An issue was discovered in Mattermost Desktop App before 4.3.0 on macOS. It allows dylib injection.CVE-2019-208577.5An issue was discovered in Mattermost Server before 5.16.0. It allows attackers to cause a denial of service (markdown renderer hang) via ma
CVE-2019-20846: High severity, CVSS 7.5 | Vulnix