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CVE-2026-128043 OpenMage magento-lts before 20.19.0 CSRF via PayPal Cancel Return Handlers

2.3 lowEPSS 0.2%

Low (2.3) in openmage magento-lts. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.

On this page
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.

Severity

CVSS 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

CVSS 3.1

3.1 low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
0.2% estimated probability of exploitation activity in the next 30 days; 6th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-13. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-352 Cross-Site Request Forgery (Cross Site Reference Forgery)
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Assigned by
VulnCheck (CNA)
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
OpenMage magento-ltsbefore 20.19.0
OpenMage magento-ltsfrom 21.0.0-beta1 before 21.0.0-beta3

Attack patterns (CAPEC)

  • CAPEC-62 Cross Site Request Forgery Likelihood: High · Severity: Very High
  • CAPEC-111 JSON Hijacking (aka JavaScript Hijacking) Likelihood: High · Severity: High
  • CAPEC-462 Cross-Domain Search Timing Severity: Medium
  • CAPEC-467 Cross Site Identification Severity: Low

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

History

  1. The NVD deferred its analysis

Changes since this site first stored the record. The same for every record: /api/public/changes.

References

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