CVE-2026-76087

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

• https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1 security-advisories@github.com
• https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16 security-advisories@github.com
• https://github.com/verbb/formie/releases/tag/2.2.23 security-advisories@github.com
• https://github.com/verbb/formie/releases/tag/3.1.31 security-advisories@github.com
• https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc security-advisories@github.com

The full cvelistV5 record. Download as CVE-2026-76087.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "formie",
          "vendor": "verbb",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.2.23"
            },
            {
              "status": "affected",
              "version": ">= 3.0.0, < 3.1.31"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Formie is a Craft CMS plugin for creating forms. Prior to 2.2.23 and 3.1.31, Formie's anonymous formie/submissions/submit action in SubmissionsController::actionSubmit trusts a client-supplied submissionId when loading an incomplete submission without session binding, ownership validation, or a valid submissionEditToken. An unauthenticated attacker can enumerate sequential IDs and overwrite or hijack another user's in-progress multi-page or save-for-later submission, and the modified data can be persisted and forwarded through notifications or integrations when the submission is completed. This is an incomplete remediation of CVE-2026-47266 because that earlier change validated edit tokens for save-submission but did not protect submit. Completed submissions are excluded by the isIncomplete filter. This issue is fixed in versions 2.2.23 and 3.1.31."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-23T18:35:45.304Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc"
        },
        {
          "name": "https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1"
        },
        {
          "name": "https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16"
        },
        {
          "name": "https://github.com/verbb/formie/releases/tag/2.2.23",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/verbb/formie/releases/tag/2.2.23"
        },
        {
          "name": "https://github.com/verbb/formie/releases/tag/3.1.31",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/verbb/formie/releases/tag/3.1.31"
        }
      ],
      "source": {
        "advisory": "GHSA-584p-f93j-wpgc",
        "discovery": "UNKNOWN"
      },
      "title": "Formie: Unauthenticated users can overwrite incomplete submissions via submit action"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-76087",
    "datePublished": "2026-09-23T18:35:45.304Z",
    "dateReserved": "2026-08-18T21:17:32.200Z",
    "dateUpdated": "2026-09-23T18:35:45.304Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}