AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-37865

MEDIUM · CVSS 4.3 EPSS 0.90%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-01-18 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.3. Exploitation may require the attacker to be authenticated. It may lead to a denial-of-service condition.

CVE
CVE-2021-37865
Severity
MEDIUM
CVSS
4.3
EPSS
0.90%

Original NVD Description

Mattermost 6.2 and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.

Related CVEs

Other vulnerabilities affecting the same vendor(s)