{"id":"CVE-2026-76087","state":"PUBLISHED","title":"Formie: Unauthenticated users can overwrite incomplete submissions via submit action","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.","publishedAt":"2026-09-23T18:35:45.304Z","updatedAt":"2026-09-24T14:12:18.128Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["verbb formie"],"affected":[{"vendor":"verbb","product":"formie","versions":[{"version":"< 2.2.23","status":"affected"},{"version":">= 3.0.0, < 3.1.31","status":"affected"}]}],"references":["https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc","https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1","https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16","https://github.com/verbb/formie/releases/tag/2.2.23","https://github.com/verbb/formie/releases/tag/3.1.31"],"weaknesses":["CWE-639","CWE-862"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/76xxx/CVE-2026-76087.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-76087","state":"PUBLISHED","datePublished":"2026-09-23T18:35:45.304Z","dateUpdated":"2026-09-24T14:12:18.128Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-18T21:17:32.200Z"},"containers":{"cna":{"title":"Formie: Unauthenticated users can overwrite incomplete submissions via submit action","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."}],"affected":[{"vendor":"verbb","product":"formie","versions":[{"version":"< 2.2.23","status":"affected"},{"version":">= 3.0.0, < 3.1.31","status":"affected"}]}],"references":[{"url":"https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc","name":"https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1","name":"https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1","tags":["x_refsource_MISC"]},{"url":"https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16","name":"https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16","tags":["x_refsource_MISC"]},{"url":"https://github.com/verbb/formie/releases/tag/2.2.23","name":"https://github.com/verbb/formie/releases/tag/2.2.23","tags":["x_refsource_MISC"]},{"url":"https://github.com/verbb/formie/releases/tag/3.1.31","name":"https://github.com/verbb/formie/releases/tag/3.1.31","tags":["x_refsource_MISC"]}],"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","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-23T18:35:45.304Z"},"source":{"advisory":"GHSA-584p-f93j-wpgc","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-24T14:12:07.675345Z","id":"CVE-2026-76087","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-24T14:12:18.128Z"}}]}}}