CVE-2022-28590Public exploitNetwork attack vector

Administrator-level remote code execution via theme upload

Published May 3, 2022 · Updated Aug 3, 2024

Remote code execution in Pixelimity 1.0 allows remote authenticated users with administrator access to execute PHP via theme upload. The install_theme action in admin/admin-ajax.php accepts a ZIP containing a PHP file and deploys it under the web-accessible themes directory without rejecting executable content. Administrator access is required, and successful exploitation permits arbitrary server-side PHP execution when the uploaded file is requested.

CVSS severity7.2
High
EPSS probability23.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in Pixelimity 1.0 allows remote authenticated users with administrator access to execute PHP via theme upload. The install_theme action in admin/admin-ajax.php accepts a ZIP containing a PHP file and deploys it under the web-accessible themes directory without rejecting executable content. Administrator access is required, and successful exploitation permits arbitrary server-side PHP execution when the uploaded file is requested.

The record

CVE
CVE-2022-28590
Published
May 3, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 3, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NIST NVDCVSS: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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1505.003Web Shell

Public exploit references

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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