CVE-2022-21829Network attack vector

Authenticated code execution via cleartext package download

Published Jun 24, 2022 · Updated Aug 3, 2024

Cleartext package retrieval in Concrete CMS 8.5.7 and earlier and 9.0.0 through 9.0.2 allows remote authenticated users to execute code. The archive download path uses the nonsecure concrete transport selector instead of concrete_secure, allowing ZIP contents to cross HTTP without integrity protection before execution. Administrative package-management access and control of the cleartext network path are required; successful archive replacement executes attacker-controlled code on the server.

CVSS severity8.0
High
EPSS probability1.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext package retrieval in Concrete CMS 8.5.7 and earlier and 9.0.0 through 9.0.2 allows remote authenticated users to execute code. The archive download path uses the nonsecure concrete transport selector instead of concrete_secure, allowing ZIP contents to cross HTTP without integrity protection before execution. Administrative package-management access and control of the cleartext network path are required; successful archive replacement executes attacker-controlled code on the server.

The record

CVE
CVE-2022-21829
Published
Jun 24, 2022
Updated
Aug 3, 2024
Vendor
Concrete CMS
Product
Concrete CMS
Classifications
CWE-74, CWE-319, CAPEC-117, T1195.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=Remediated in Concrete CMS 8.5.8 and 9.1.0. Affected Versions are Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Concrete CMS · Concrete CMSversion=Remediated in Concrete CMS 8.5.8 and 9.1.0. Affected Versions are Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2

Published CVSS scores

7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.0Concrete CMS security teamCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-319Cleartext Transmission of Sensitive Information
CAPEC-117Interception
T1195.002Compromise Software Supply Chain

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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