Improper Enforcement of Behavioral Workflow in Sylius - CVE-2026-53637
Published: September 2, 2026
Vulnerability identifier: #VU146809
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-53637
CWE-ID: CWE-841
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify or delete a completed order.
The vulnerability exists due to improper enforcement of behavioral workflow in the Cart FormComponent when handling stale cart state after the underlying order has been completed. A remote user can keep the cart page open, complete checkout in another tab, and then modify the stale cart to modify or delete a completed order.
The issue occurs when the browser still displays an outdated cart while the order state has already changed in the background.
Affected software
Sylius
How to mitigate CVE-2026-53637
Install security update from vendor's website.
Sylius - addressed in versions 2.0.18, 2.1.15, 2.2.6