{"id":"CVE-2026-100872","title":"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","summary":"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…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-345"],"vendor":"Sylius","product":"sylius/sylius","affected":["sylius/sylius >= 2.0.0 < 2.1.16","sylius/sylius >= 2.2.0 < 2.2.9"],"published":"2026-09-27","updated":"2026-09-28","sourceUpdated":"2026-09-28T20:57:50.143","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100872","references":[{"url":"https://github.com/Sylius/Sylius","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/commit/9e9aeaacbc97b1fc01d573e44d6679194527905d","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/pull/19216","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/releases/tag/v2.2.9","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/security/advisories/GHSA-vv4h-q2x8-74g4","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/sylius-2-x-before-2.1.16-and-2.2.9-payment-amount-overwrite","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Sylius/Sylius/security/advisories/GHSA-vv4h-q2x8-74g4","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-28T15:05:27.278604Z"},"ingestedAt":"2026-09-27T13:53:26.576Z","epss":0.00219,"epssPercentile":0.1257,"slug":"CVE-2026-100872","body":"## Overview\n\nSylius 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":212019,"id":"CVE-2026-100872","ts":1790612181515,"field":"exploit_available","old":"false","new":"true"}]}