CVE-2022-3147Network attack vector

Service interruption via concurrent JPEG memory exhaustion

Published Sep 9, 2022 · Updated Dec 6, 2024

Uncontrolled resource consumption in Mattermost 7.0.x and earlier allows remote authenticated users to interrupt the server via JPEG uploads. The image-upload path permits concurrent JPEG files to consume excessive memory because their in-memory sizes are not adequately bounded. Exploitation requires an authenticated account and a susceptible system configuration; memory exhaustion can deny server availability.

CVSS severity3.1
Low
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Mattermost 7.0.x and earlier allows remote authenticated users to interrupt the server via JPEG uploads. The image-upload path permits concurrent JPEG files to consume excessive memory because their in-memory sizes are not adequately bounded. Exploitation requires an authenticated account and a susceptible system configuration; memory exhaustion can deny server availability.

The record

CVE
CVE-2022-3147
Published
Sep 9, 2022
Updated
Dec 6, 2024
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-400, CWE-770, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Dec 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=7.0.x

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mattermost · Mattermostversion=unspecified <=7.0.x

Published CVSS scores

3.1Mattermost, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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