Sylius 2.x before 2.1.16 and 2.2.9 Payment Amount Overwrite

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-100872",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-09-27T14:29:46.185Z",
    "dateReserved": "2026-09-27T00:20:54.408Z",
    "datePublished": "2026-09-27T13:09:56.034Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck",
        "dateUpdated": "2026-09-27T14:29:46.185Z"
      },
      "datePublic": "2026-09-02T00:00:00.000Z",
      "title": "Sylius 2.x before 2.1.16 and 2.2.9 Payment Amount Overwrite",
      "descriptions": [
        {
          "lang": "en",
          "value": "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": [
        {
          "vendor": "Sylius",
          "product": "Sylius",
          "collectionURL": "https://packagist.org",
          "packageName": "sylius/sylius",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.1.16"
            },
            {
              "version": "2.2.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.2.9"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Insufficient Verification of Data Authenticity",
              "cweId": "CWE-345",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/Sylius/Sylius/security/advisories/GHSA-vv4h-q2x8-74g4",
          "name": "GitHub Security Advisory (GHSA-vv4h-q2x8-74g4)",
          "tags": [
            "vendor-advisory"
          ]
        },
        {
          "url": "https://github.com/Sylius/Sylius/pull/19216",
          "tags": [
            "patch",
            "issue-tracking"
          ]
        },
        {
          "url": "https://github.com/Sylius/Sylius/commit/9e9aeaacbc97b1fc01d573e44d6679194527905d",
          "tags": [
            "patch"
          ]
        },
        {
          "url": "https://github.com/Sylius/Sylius/releases/tag/v2.2.9",
          "name": "Sylius v2.2.9 Release Notes",
          "tags": [
            "release-notes"
          ]
        },
        {
          "url": "https://github.com/Sylius/Sylius",
          "tags": [
            "product"
          ]
        },
        {
          "url": "https://www.vulncheck.com/advisories/sylius-2-x-before-2.1.16-and-2.2.9-payment-amount-overwrite",
          "name": "VulnCheck Advisory: Sylius 2.x before 2.1.16 and 2.2.9 Payment Amount Overwrite",
          "tags": [
            "third-party-advisory"
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS"
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH"
          }
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "leediay153",
          "type": "finder"
        }
      ]
    }
  }
}