FKIE_CVE-2026-76087

Vulnerability from fkie_nvd - Published: 2026-09-23 19:19 - Updated: 2026-09-24 14:18
Severity
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1
security-advisories@github.comhttps://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16
security-advisories@github.comhttps://github.com/verbb/formie/releases/tag/2.2.23
security-advisories@github.comhttps://github.com/verbb/formie/releases/tag/3.1.31
security-advisories@github.comhttps://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "formie",
          "vendor": "verbb",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.2.23"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.1.31"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Formie is a Craft CMS plugin for creating forms. Prior to 2.2.23 and 3.1.31, Formie\u0027s 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\u0027s 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."
    }
  ],
  "id": "CVE-2026-76087",
  "lastModified": "2026-09-24T14:18:16.887",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-76087",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-24T14:12:07.675345Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-23T19:19:14.570",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/verbb/formie/releases/tag/2.2.23"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/verbb/formie/releases/tag/3.1.31"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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