{"id":"CVE-2026-76087","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-76087","generatedAt":"2026-10-28T01:03:45.798Z","title":"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…","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.","published":"2026-09-23T19:19:15.000Z","lastModified":"2026-09-30T17:32:07.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N"},"cwe":["CWE-639","CWE-862"],"affected":[],"epss":{"score":0.00409,"percentile":0.34896,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.00313,"percentile":0.21528}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-23T19:19:15.000Z","detail":{"score":"8.2","severity":"HIGH","publishedAt":"2026-09-23T19:19:14.570Z"},"summary":"New CVE, high severity (CVSS 8.2)."}],"references":[{"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","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-76087","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}