title: Reflected XSS in OAuth Flow
description: Fixed a bypass for a reflected cross-site scripting vulnerability affecting OAuth-enabled instances of Mattermost.
problem types: CWE-79 Cross-site Scripting (XSS)
affected:
{
product: Mattermost
vendor: Mattermost
versions:
status: unaffected, version: 5.34.5
status: unaffected, version: 5.35.4
lessThanOrEqual: 5.36.0, status: affected, version: 5.32.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 7.1
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
version: 3.1
]