Improper access control in AlternativeCommerce PayPal Checkout - CVE-2026-122069
Published: November 5, 2026
Vulnerability identifier: #VU159409
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-122069
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to the affected module does not sufficiently validate incoming PayPal webhook requests. A remote attacker can submit a specially crafted request and cause the associated order to be marked as paid without completing a payment.
Affected software
AlternativeCommerce PayPal Checkout
How to mitigate CVE-2026-122069
Install updates from vendor's website.
AlternativeCommerce PayPal Checkout - update to 1.1.1