CVE-2026-100872

8.7 highEPSS 0.2%

High (8.7). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
CWE: CWE-345
Published: 2026-09-27
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

References

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

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