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Vulnerabilities

Vulnerability · CVE-2025-13859

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_setting

Published Jan 15, 2026 · catalog updated Jan 15, 2026 · WPCenter AffiliateX – Amazon Affiliate Plugin

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-13859. EPSS is 0.20%. Act only if a listed version of WPCenter AffiliateX – Amazon Affiliate Plugin is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Vendor / distro source
Affected products
vendor WPCenter AffiliateX – Amazon Affiliate Plugin 1.0.0 ≤1.3.9.3

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor WPCenter AffiliateX – Amazon Affiliate Plugin 1.0.0 ≤1.3.9.31.0.0 ≤1.3.9.3

How to fix CVE-2025-13859

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-13859. EPSS is 0.20%. Act only if a listed version of WPCenter AffiliateX – Amazon Affiliate Plugin is installed.

Which versions are affected?

Compare what you have installed with WPCenter AffiliateX – Amazon Affiliate Plugin 1.0.0 ≤1.3.9.3 1.0.0 ≤1.3.9.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 15, 2026 · EUVD

    Detected

    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

  2. Jan 15, 2026 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-13859

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-13859

    30-day exploitation probability 0.20%

    first.org
  • EUVDVulnerability recordEUVD-2026-2807

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • EUVDNov 5, 2026
  • CVE.orgOct 30, 2026