title: Unrestricted navigation due to unvalidated mattermost server redirection
description: Mattermost Desktop App fails to validate a mattermost server redirection and navigates to an arbitrary website
problem types: CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
affected:
{
defaultStatus: unaffected
product: Mattermost
vendor: Mattermost
versions:
lessThanOrEqual: 5.2.2, status: affected, version: 0, versionType: semver
status: unaffected, version: 5.3.0
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.4
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Update Mattermost Desktop App to version v5.3 or higher.