CVE-2026-13158Public exploitNetwork attack vector

Administrator code execution via unchecked demo import

Published Aug 1, 2026 · Updated Aug 1, 2026

Arbitrary file upload in Everest Toolkit 1.2.3 and earlier allows remote authenticated users with import access to execute PHP code. The demo-content import handler disables WordPress's file-type test and stores an attacker-supplied PHP file in the web-accessible uploads directory. An Everest Themes theme must activate the importer, and Administrator access is required by default; multisite site administrators also qualify.

CVSS severityUnavailable
Unscored
EPSS probability0.35%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Everest Toolkit 1.2.3 and earlier allows remote authenticated users with import access to execute PHP code. The demo-content import handler disables WordPress's file-type test and stores an attacker-supplied PHP file in the web-accessible uploads directory. An Everest Themes theme must activate the importer, and Administrator access is required by default; multisite site administrators also qualify.

The record

CVE
CVE-2026-13158
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
Everest Themes
Product
Everest Toolkit
Classifications
T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2026Record 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=0 <=1.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Everest Themes · Everest Toolkitversion=0 <=1.2.3

Published CVSS scores

No CVSS assessment is available in this record.

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 exploitPublished

Weakness, pattern, technique

T1505.003Server Software Component: Web 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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