CVE-2025-13859

medium

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/36d57b8d-7e62-413b-8ea9-87963b8cd469?source=cve

https://plugins.trac.wordpress.org/changeset/3420957/affiliatex/trunk/includes/helpers/class-affiliatex-helpers.php

https://plugins.trac.wordpress.org/changeset/3420957/affiliatex/trunk/includes/functions/AjaxFunctions.php

Details

Source: Mitre, NVD

Published: 2026-01-15

Updated: 2026-04-15

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.4

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

Severity: Medium

EPSS

EPSS: 0.00025