CVE-2026-100872
Published:September 27, 2026
Updated:October 10, 2026
Sylius versions before 2.1.16 and 2.2.9 fail to validate payment amounts during cart recalculation, allowing unauthenticated attackers to modify order totals after gateway transaction initiation. Attackers can pay a small amount, enlarge the order after gateway capture, and have the system mark the inflated order as fully paid while the gateway captured only the original amount.
Affected Packages
https://github.com/Sylius/Sylius.git (GITHUB):
Affected version(s) >=v2.0.0 <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 v2.2.9https://github.com/Sylius/Sylius.git (GITHUB):
Affected version(s) =v2.3.0-ALPHA.1 <v2.3.0Fix Suggestion:
Update to version v2.3.0sylius/core (PHP):
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/sylius (PHP):
Affected version(s) >=v2.0.0 <v2.1.16Fix Suggestion:
Update to version v2.1.16sylius/core (PHP):
Affected version(s) >=v2.0.0 <v2.1.16Fix Suggestion:
Update to version v2.1.16sylius/sylius (PHP):
Affected version(s) =v2.3.0-alpha.1 <v2.3.0Fix Suggestion:
Update to version v2.3.0Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
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:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Insufficient Verification of Data Authenticity
EPSS
Base Score:
0.18