CVE-2022-1384Network attack vector

Known plugin flaw exploitation via version downgrade

Published Apr 19, 2022 · Updated Dec 6, 2024

Missing authorization in Mattermost 6.4 and earlier allows remote authenticated users to install obsolete Marketplace plugins. The Marketplace installation path does not properly validate the requested plugin version and accepts an older release with known flaws. A System Administrator must initiate installation, and the resulting impact depends on vulnerabilities in the selected plugin release.

CVSS severity4.7
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Mattermost 6.4 and earlier allows remote authenticated users to install obsolete Marketplace plugins. The Marketplace installation path does not properly validate the requested plugin version and accepts an older release with known flaws. A System Administrator must initiate installation, and the resulting impact depends on vulnerabilities in the selected plugin release.

The record

CVE
CVE-2022-1384
Published
Apr 19, 2022
Updated
Dec 6, 2024
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-477, CWE-862
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 19, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <=6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Mattermost · Mattermostversion=unspecified <=6.4

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7Mattermost, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
6.0NIST NVDAV:N/AC:M/Au:S/C:P/I:P/A:P

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-477Use of Obsolete Function
CWE-862Missing Authorization

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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