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Description

The AffiliateX – Amazon Affiliate Plugin plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_customization_settings AJAX action in versions 1.0.0 to 1.3.9.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to store arbitrary JavaScript that executes whenever an AffiliateX block renders on the site.

PUBLISHED Reserved 2025-12-01 | Published 2026-01-15 | Updated 2026-01-15 | Assigner Wordfence




MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

1.0.0 (semver)
affected

Timeline

2025-12-01:Vendor Notified
2026-01-15:Disclosed

Credits

Kenneth Dunn finder

References

www.wordfence.com/...-7e62-413b-8ea9-87963b8cd469?source=cve

plugins.trac.wordpress.org/...es/functions/AjaxFunctions.php

plugins.trac.wordpress.org/...s/class-affiliatex-helpers.php

cve.org (CVE-2025-13859)

nvd.nist.gov (CVE-2025-13859)

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