CVE-2026-13157Public exploitNetwork attack vector

Authenticated code execution via unchecked PHP upload

Published Aug 1, 2026 · Updated Aug 1, 2026

Arbitrary file upload in Themely Theme Demo Import 1.1.3 and earlier allows remote authenticated users to upload executable PHP files. The TDI_import_demo_data AJAX import handler accepts content_file with the WordPress file-type test disabled and stores it under wp-content/uploads. An account with the import capability and a valid AJAX nonce is required; Administrator has this capability by default, and requesting the uploaded script executes it as the web server.

CVSS severity7.2
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Themely Theme Demo Import 1.1.3 and earlier allows remote authenticated users to upload executable PHP files. The TDI_import_demo_data AJAX import handler accepts content_file with the WordPress file-type test disabled and stores it under wp-content/uploads. An account with the import capability and a valid AJAX nonce is required; Administrator has this capability by default, and requesting the uploaded script executes it as the web server.

The record

CVE
CVE-2026-13157
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
Themely
Product
Theme Demo Import
Classifications
CWE-434, 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 <=1.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Themely · Theme Demo Importversion=0 <=1.1.3

Published CVSS scores

7.2CISA-ADPCVSS: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 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

CWE-434Unrestricted Upload of File with Dangerous Type
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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