What is CVE-2022-3147?

CVE-2022-3147 is a low-severity vulnerability in Mattermost, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2022-09-09.

How severe is CVE-2022-3147?

Low severity. CVSS v3 base score is 3.1 out of 10.

Resource exhaustion in Mattermost

CVE-2022-3147

Mattermost version 7.0.x and earlier fails to sufficiently limit the in-memory sizes of concurrently uploaded JPEG images, which allows authenticated users to cause resource exhaustion on specific system configurations, resulting in server-side Denial of Service.

Vulnerability class: DoS (Denial of Service)

Published 2022-09-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.010 (62.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.001

Affected products

Mattermost — versions unspecified
Mattermost Server

Weakness classification (CWE)

References

mattermost.com/security-updates/ (Vendor Advisory)
hackerone.com/reports/1549513 (Permissions Required)

Frequently asked questions

What is CVE-2022-3147?: CVE-2022-3147 is a low-severity vulnerability in Mattermost, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2022-09-09.
How severe is CVE-2022-3147?: Low severity. CVSS v3 base score is 3.1 out of 10.