strangerstudios Paid Memberships Pro Plugin up to 3.6.5 on WordPress AJAX authorization

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in strangerstudios Paid Memberships Pro Plugin up to 3.6.5 on WordPress. The impacted element is the function wp_ajax_pmpro_stripe_create_webhook/wp_ajax_pmpro_stripe_delete_webhook/wp_ajax_pmpro_stripe_rebuild_webhook of the component AJAX Handler. The manipulation leads to authorization. This vulnerability is documented as CVE-2026-4100. The attack can be initiated remotely. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in strangerstudios Paid Memberships Pro Plugin up to 3.6.5 on WordPress and classified as problematic. This issue affects the function wp_ajax_pmpro_stripe_create_webhook/wp_ajax_pmpro_stripe_delete_webhook/wp_ajax_pmpro_stripe_rebuild_webhook of the component AJAX Handler. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is integrity, and availability. The summary by CVE is:

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.

The weakness was released by Jared Reyes. It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-4100 since 03/13/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26782). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.1
CNA Vector (Wordfence): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: github.com

Timelineinfo

03/13/2026 CVE reserved
05/02/2026 +49 days Advisory disclosed
05/02/2026 +0 days VulDB entry created
05/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Jared Reyes
Status: Confirmed

CVE: CVE-2026-4100 (🔒)
GCVE (CVE): GCVE-0-2026-4100
GCVE (VulDB): GCVE-100-360851
EUVD: 🔒

Entryinfo

Created: 05/02/2026 15:56
Updated: 05/03/2026 00:26
Changes: 05/02/2026 15:56 (68), 05/03/2026 00:26 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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