CVE-2026-100869
Published:September 27, 2026
Updated:October 10, 2026
Sylius versions before 2.1.16 and 2.2.9 fail to restrict payment request actions in the Shop API endpoint, allowing customers to trigger refunds on completed orders. Attackers with order tokens can submit arbitrary payment actions like refunds that payment gateways execute while Sylius maintains order as paid, causing financial loss.
Affected Packages
https://github.com/Sylius/Sylius.git (GITHUB):
Affected version(s) >=v2.0.0-ALPHA.3 <v2.1.16Fix Suggestion:
Update to version v2.1.16https://github.com/Sylius/Sylius.git (GITHUB):
Affected version(s) >=v2.2.0 <v2.2.9Fix Suggestion:
Update to version v2.2.9sylius/sylius (PHP):
Affected version(s) >=v2.2.0 <v2.2.9Fix Suggestion:
Update to version v2.2.9sylius/api-bundle (PHP):
Affected version(s) >=v2.2.0 <v2.2.9Fix Suggestion:
Update to version v2.2.9sylius/api-bundle (PHP):
Affected version(s) >=v2.0.0-ALPHA.3 <v2.1.16Fix Suggestion:
Update to version v2.1.16sylius/sylius (PHP):
Affected version(s) >=v2.0.0-alpha.3 <v2.1.16Fix Suggestion:
Update to version v2.1.16Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.26