CVE-2026-128043

EUVD-2026-125065
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.
CSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.1 LOW
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 5.65%
Common Weakness Enumeration
References
https://github.com/OpenMage/magento-lts/commit/86c8895d586db61ac7d093ba4e473103a30882c8
https://github.com/OpenMage/magento-lts/security/advisories/GHSA-2jfg-wx75-5cc8
https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.19.0-csrf-via-paypal-cancel-return-handlers