Is CVE-2026-4100 actively exploited?

No active exploitation of CVE-2026-4100 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4100 be exploited remotely?

Yes. CVE-2026-4100 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4100?

CVE-2026-4100 has a CVSS score of 7.1 (HIGH).

HOME VULNERABILITIESCVE-2026-4100

HIGH

CVE-2026-4100

CWE-862Published: May 2, 2026· Updated: May 5, 2026

7.1

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.7th

Official Description

The Paid Memberships Pro plugin for WordPress is vulnerable to unauthorized modification and disruption of Stripe webhook configuration in all versions up to, and including, 3.6.5. This is due to missing capability checks on the `wp_ajax_pmpro_stripe_create_webhook`, `wp_ajax_pmpro_stripe_delete_webhook`, and `wp_ajax_pmpro_stripe_rebuild_webhook` AJAX handlers. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete, create, or rebuild the site's Stripe webhook, disrupting all payment processing, subscription renewal synchronization, cancellation handling, and failed payment management.

NVD Source

Technical Analysis

CVE-2026-4100 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.1.