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Advisories

OpenMage magento-lts before 20.19.0 CSRF via PayPal Cancel Return Handlers

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Severity
low
Date
Affecting

  • magento-lts >= 0, < 20.19.0

  • magento-lts >= 21.0.0-beta1, < 21.0.0-beta3

CWE
  • CWE-352 Cross-Site Request Forgery (CSRF)
CVSS
2.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
skeletonsec, colinmollenhour
Description
OpenMage magento-lts before 20.19.0 and 21.0.0-beta1 before 21.0.0-beta3 contains a cross-site request forgery vulnerability in PayPal cancel and decline return handlers that trust only the checkout session without verifying the request came from PayPal. Attackers can lure a shopper into a cross-site GET to paypal/standard/cancel to cancel their recent uninvoiced order, void pending authorizations, and restore items to the cart.

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