CVE-2026-100872

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Sylius/Sylius
https://github.com/Sylius/Sylius/commit/9e9aeaacbc97b1fc01d573e44d6679194527905d
https://github.com/Sylius/Sylius/pull/19216
https://github.com/Sylius/Sylius/releases/tag/v2.2.9
https://github.com/Sylius/Sylius/security/advisories/GHSA-vv4h-q2x8-74g4
https://www.vulncheck.com/advisories/sylius-2-x-before-2.1.16-and-2.2.9-payment-amount-overwrite
https://github.com/Sylius/Sylius/security/advisories/GHSA-vv4h-q2x8-74g4

Configurations

No configuration.

History

28 Sep 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/Sylius/Sylius/security/advisories/GHSA-vv4h-q2x8-74g4 -~~	() https://github.com/Sylius/Sylius/security/advisories/GHSA-vv4h-q2x8-74g4 -

27 Sep 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-27 13:16

Updated : 2026-09-28 20:57

NVD link : CVE-2026-100872

Mitre link : CVE-2026-100872

CVE.ORG link : CVE-2026-100872

JSON object : View

Products Affected

No product.

CWE

CWE-345

Insufficient Verification of Data Authenticity

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