CVE-2026-113468
Received Received - Intake

PayPal Payment Notification Manipulation Vulnerability

Vulnerability report for CVE-2026-113468, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: TYPO3

Description

The payment notification endpoint for PayPal accepts incoming data without verifying that it comes from the payment provider. Any site visitor can overwrite the stored payment notification of an order that is still awaiting payment with arbitrary content. This requires a page that contains the shop's order plugin. Orders that are already paid are not affected.

CVSS Scores

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Meta Information

Published
2026-10-20
Last Modified
2026-10-20
Generated
2026-10-20
AI Q&A
2026-10-20
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
TYPO3 Extension "TYPO3 Shop by coding.ms" 6.0.0
TYPO3 Extension "TYPO3 Shop by coding.ms" 5.0.0
TYPO3 Extension "TYPO3 Shop by coding.ms" 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

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Executive Summary

This vulnerability allows any visitor to a website to manipulate payment notifications for orders that have not yet been paid. The payment notification endpoint does not verify if the data comes from the actual payment provider, enabling unauthorized changes to stored payment details.

Impact Analysis

If you run a website using the affected TYPO3 Shop extension, attackers could alter payment notifications to show incorrect payment statuses. This could lead to unpaid orders being marked as paid, causing financial losses or disputes.

Mitigation Strategies

Disable the payment notification endpoint in the TYPO3 Shop extension until a patch is applied. Review order data for unauthorized modifications and ensure only verified payment providers can update payment status.

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