VULNERABILITY INTELLIGENCE

CVE-2018-21257

CVSS score5.3 MEDIUM
EPSS probability0.81%
CISA KEVNot currently listed
Published2020-06-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

An issue was discovered in Mattermost Server before 5.1. It allows attackers to bypass intended access restrictions (for setting a channel header) via the Channel header slash command API.

Weakness classification

  • CWE-862: Missing Authorization

Primary references