{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54721",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-28T15:45:52.816811Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-28T15:58:28.067Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "silverstripe-userforms",
          "vendor": "silverstripe",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.4.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.0.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.1.0, \u003c 7.1.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Silverstripe UserForms provides a visual form builder for the Silverstripe CMS. From 6.0.0 until 6.4.9, 7.0.7, and 7.1.1, the userform email recipient subject field in the CMS accepts a specially crafted payload that can be interpreted as executable server-side code. An authenticated CMS user with permission to configure a UserForms email recipient can use the subject field to run arbitrary code on the server, compromising confidentiality, integrity, and availability. This issue is fixed in versions 6.4.9, 7.0.7, and 7.1.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T16:52:46.023Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/security/advisories/GHSA-g8wr-r2v2-vqc6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/security/advisories/GHSA-g8wr-r2v2-vqc6"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/pull/1441",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/pull/1441"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/pull/1442",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/pull/1442"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/commit/23c069866900c19b499bfa997d1e251e97491702",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/commit/23c069866900c19b499bfa997d1e251e97491702"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/commit/c55494ad7c717b199a3c1663b43a54db5d95604c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/commit/c55494ad7c717b199a3c1663b43a54db5d95604c"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/6.4.9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/6.4.9"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.0.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.0.7"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.1.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.1.1"
        }
      ],
      "source": {
        "advisory": "GHSA-g8wr-r2v2-vqc6",
        "discovery": "UNKNOWN"
      },
      "title": "Silverstripe UserForms: Remote code execution via userforms email subject"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54721",
    "datePublished": "2026-08-27T16:52:46.023Z",
    "dateReserved": "2026-06-15T23:07:33.231Z",
    "dateUpdated": "2026-08-28T15:58:28.067Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}