CVE-2026-76087

Description

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.

Overview

State: PUBLISHED
Assigner (CNA): GitHub_M
CVSS severity: HIGH
CVSS score: 8.2 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Effective score: 8.2 / 10 HIGH source: CNA overview
CWE(s): CWE-639, CWE-862
Reserved: 2026-08-18
Published: 2026-09-23 18:35 UTC
Last updated: 2026-09-23 18:35 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/76xxx/CVE-2026-76087.json
Linked Threat: CVE-2026-76087 — Formie: Unauthenticated users can overwrite incomplete submissions via submit action

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-23 19:19:14 UTC
NVD last modified: 2026-09-23 19:19:14 UTC
NVD CVSS v3.1: 8.2 / 10 HIGH source: security-advisories@github.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Exploitability subscore: 3.9 / 10
Impact subscore: 4.2 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-85547
Assigner: GitHub_M
Published: Sep 23, 2026, 6:35:45 PM
Updated: Sep 23, 2026, 6:35:45 PM
EUVD base score (CVSS 3.1): 8.2 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
EUVD-reported EPSS: 0.0000
Vendors: verbb
Products: formie (3.0.0, < 3.1.31)

formie (< 2.2.23)
Aliases: GHSA-584p-f93j-wpgc

ENISA description: 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.

EUVD references (5)

Affected products (1)

Vendor	Product	Versions	Platforms
verbb	formie	`< 2.2.23` (affected), `>= 3.0.0, < 3.1.31` (affected)	—

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

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

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (5)

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

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Microsoft Exchange CVE-2026-42897 Patch and OWA Mitigation Guide

web:fixitphill.com

Patch Microsoft Exchange CVE - 2026 -42897 with June 2026 security updates, keep EEMS mitigations during rollout, and verify OWA and mail flow.

2026-09-24 11:12 UTC
Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-09-24 11:12 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Security Update Guide - Microsoft Security Response Center

2026-09-24 11:12 UTC
Cisco Advance Notification for Publication of September 16, 2026 ...

web:sec.cloudapps.cisco.com

On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...

2026-09-24 11:12 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-24 11:12 UTC
Description of the security update for Office 2016: August 11, 2026 ...

web:support.microsoft.com

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?) How to get and install the update Method 1: Microsoft Update This update is available from Microsoft Update. When you turn on ...

2026-09-24 11:12 UTC
SAP Security Patch Day - June 2026

web:support.sap.com

SAP security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the support portal and applies patches on priority to protect their SAP landscape. On 9th of June 2026 , SAP security patch day saw the release of 15 new security notes.

2026-09-24 11:12 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-24 11:12 UTC
Oracle Critical Security Patch Update Advisory - June 2026

web:www.oracle.com

Additional CVEs addressed are: The patch for CVE - 2026 -34481 also addresses CVE - 2026 -34477, CVE - 2026 -34478, CVE - 2026 -34479, and CVE - 2026 -34480. Oracle Fusion Middleware Risk Matrix This Critical Security Patch Update contains 106 new security patches for Oracle Fusion Middleware. 53 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a ...

2026-09-24 11:12 UTC
July Patch RoguePlanet Tuesday Kills Windows Kerberos RC4 Rollback ...

web:www.techtimes.com

July 2026 Patch Tuesday permanently removes the Kerberos RC4 rollback registry key on July 14, leaving service accounts with RC4-only material unable to authenticate. Administrators must also ...

2026-09-24 11:12 UTC

AI Forensic Analysis

Only Available for Registered Users. Sign in to view.

Raw JSON

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"
}