CVE-2016-11071

6.1 mediumEPSS 0.7%

An issue was discovered in Mattermost Server before 3.1.0. It allows XSS because the noreferrer and noopener protection mechanisms were not in place.

Severity

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2020-06-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-h3qg-w9j5-wh3m	Go	github.com/mattermost/mattermost-server	<3.1.0	3.1.0
GO-2025-4058	Go	github.com/mattermost/mattermost-server	<3.1.0+incompatible	3.1.0+incompatible