CVE-2026-128043
Published:November 13, 2026
Updated:November 13, 2026
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.
Affected Packages
https://github.com/OpenMage/magento-lts.git (GITHUB):
Affected version(s) >=v21.0.0-beta1 <v21.0.0-beta3Fix Suggestion:
Update to version v21.0.0-beta3https://github.com/OpenMage/magento-lts.git (GITHUB):
Affected version(s) >=1.1.1 <v20.19.0 || >=v19.4.0 <v20.19.0 || >=v20.0.0 <v20.19.0Fix Suggestion:
Update to version v20.19.0openmage/magento-lts (PHP):
Affected version(s) >=v21.0.0-beta1 <v21.0.0-beta3Fix Suggestion:
Update to version v21.0.0-beta3openmage/magento-lts (PHP):
Affected version(s) >=v19.4.0 <v20.19.0 || >=v20.0.0 <v20.19.0 || >=1.9.1.1 <v20.19.0Fix Suggestion:
Update to version v20.19.0Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Cross-Site Request Forgery