CVE-2026-128043
OpenMage magento-lts before 20.19.0 CSRF via PayPal Cancel Return Handlers
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| magento-lts OpenMage |
≥ 0; < 20.19.0 (affected, semver) 20.19.0 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| magento-lts OpenMage |
≥ 21.0.0-beta1; < 21.0.0-beta3 (affected, semver) 21.0.0-beta3 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 2.3 low |
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 | CNA: VulnCheck |
| 3.1 / 3.1 low |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N | CNA: VulnCheck |
| 4.0 / 2.3 low |
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 3.1 low |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-2jfg-wx75-5cc8CNA: VulnCheck · vendor-advisory
- https://github.com/OpenMage/magento-lts/commit/86c8895d586db61ac7d093ba4e473103a30882c8CNA: VulnCheck · patch
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.19.0-csrf-via-paypal-cancel-return-handlersCNA: VulnCheck · third-party-advisory
- https://github.com/OpenMage/magento-lts/commit/86c8895d586db61ac7d093ba4e473103a30882c8[email protected]
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-2jfg-wx75-5cc8[email protected]
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.19.0-csrf-via-paypal-cancel-return-handlers[email protected]
For agents and automation
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