AUGUST 4, 2026
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Case File

CVE-2019-20866

MEDIUM · CVSS 5.3 EPSS 0.92%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-06-19 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. See the original NVD description below for full technical details.

CVE
CVE-2019-20866
Severity
MEDIUM
CVSS
5.3
EPSS
0.92%

Original NVD Description

An issue was discovered in Mattermost Server before 5.12.0. Use of a Proxy HTTP header, rather than the source address in an IP packet header, for obtaining IP address information was mishandled.

Related CVEs

Other vulnerabilities affecting the same vendor(s)