CVE-2022-42092Network attack vector

Remote code execution via theme upload

Published Oct 7, 2022 · Updated Aug 3, 2024

Backdrop CMS 1.22.0 has an unrestricted file-upload flaw in the themes path that allows remote authenticated users with advanced permissions to execute code. The themes upload handling accepts a dangerous file that can be placed where the CMS executes it, turning an administrative upload into server-side code execution. Third parties dispute the claim and state that advanced permissions are required; the reported consequence is remote code execution with confidentiality, integrity, and availability impact.

CVSS severity7.2
High
EPSS probability1.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Backdrop CMS 1.22.0 has an unrestricted file-upload flaw in the themes path that allows remote authenticated users with advanced permissions to execute code. The themes upload handling accepts a dangerous file that can be placed where the CMS executes it, turning an administrative upload into server-side code execution. Third parties dispute the claim and state that advanced permissions are required; the reported consequence is remote code execution with confidentiality, integrity, and availability impact.

The record

CVE
CVE-2022-42092
Published
Oct 7, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 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

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/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.

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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-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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