The affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.9.2 via the upload_image function. This is due to insufficient file type validation in upload_image due to a weak Content-Type prefix check and extension derivation from the attacker-controlled URL path, with no dangerous-extension stripping. This makes it possible for authenticated attackers, with contributor-level access and above, to upload files that may be executable, which makes remote code execution possible. Exploitation requires the "import product image" option to be enabled in the plugin settings, as this activates the image download pipeline triggered on product post save.

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History

Wed, 28 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 28 Oct 2026 07:00:00 +0000

Type Values Removed Values Added
First Time appeared Cservit
Cservit affiliate-toolkit – Multi-network Affiliate & Amazon Product Display
Wordpress-extensions
Wordpress-extensions affiliate-toolkit
Vendors & Products Cservit
Cservit affiliate-toolkit – Multi-network Affiliate & Amazon Product Display
Wordpress-extensions
Wordpress-extensions affiliate-toolkit

Wed, 28 Oct 2026 04:00:00 +0000

Type Values Removed Values Added
Description The affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.9.2 via the upload_image function. This is due to insufficient file type validation in upload_image due to a weak Content-Type prefix check and extension derivation from the attacker-controlled URL path, with no dangerous-extension stripping. This makes it possible for authenticated attackers, with contributor-level access and above, to upload files that may be executable, which makes remote code execution possible. Exploitation requires the "import product image" option to be enabled in the plugin settings, as this activates the image download pipeline triggered on product post save.
Title affiliate-toolkit <= 3.9.2 - Authenticated (Contributor+) Arbitrary File Upload via 'atkp_product_largeimageurl' Parameter
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-10-28T16:10:48.081Z

Reserved: 2026-10-15T18:50:58.462Z

Link: CVE-2026-111255

cve-icon Vulnrichment

Updated: 2026-10-28T14:58:24.838Z

cve-icon NVD

Status : Deferred

Published: 2026-10-28T04:17:56.390

Modified: 2026-10-28T17:17:38.683

Link: CVE-2026-111255

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-28T06:45:14Z

Weaknesses