High
Formie: Unauthenticated front-end submission editing can overwrite existing submissions
Type: advisorySources: OSV
Formie is a Craft CMS plugin for creating forms. Prior to 2.2.21 and 3.1.26, unauthenticated users could modify existing submissions by posting a known or guessed submission ID to formie/submissions/save-submission. This vulnerability is fixed in 2.2.21 and 3.1.26.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-47266
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 07:31 UTC · Revision 1
Source evidence
Formie: Unauthenticated front-end submission editing can overwrite existing submissions
core-osv · Original sourcePublished 29 May 2026, 19:03 UTC
Formie is a Craft CMS plugin for creating forms. Prior to 2.2.21 and 3.1.26, unauthenticated users could modify existing submissions by posting a known or guessed submission ID to formie/submissions/save-submission. This vulnerability is fixed in 2.2.21 and 3.1.26.
osv:CVE-2026-47266
Complete source record
{
"id": "dbc9f0c6a8f106e400a61c5499323fdc705020cd136fb92c1f674ab67767f6c1",
"url": "https://osv.dev/vulnerability/CVE-2026-47266",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Formie: Unauthenticated front-end submission editing can overwrite existing submissions",
"summary": "Formie is a Craft CMS plugin for creating forms. Prior to 2.2.21 and 3.1.26, unauthenticated users could modify existing submissions by posting a known or guessed submission ID to formie/submissions/save-submission. This vulnerability is fixed in 2.2.21 and 3.1.26.",
"evidence": "osv:CVE-2026-47266",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-47266",
"aliases": [
"CVE-2026-47266",
"GHSA-pgxq-p76c-x9cg"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
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{
"repo": "https://github.com/verbb/formie",
"type": "GIT",
"events": [
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},
{
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{
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{
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{
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
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{
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{
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
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{
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"source": "REFERENCES_TAG",
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],
"modified": "2026-10-28T02:30:26.680160692Z",
"provider": "osv",
"references": [
"https://github.com/verbb/formie/releases/tag/2.2.21",
"https://github.com/verbb/formie/releases/tag/3.1.26",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47266.json",
"https://github.com/verbb/formie/security/advisories/GHSA-pgxq-p76c-x9cg",
"https://nvd.nist.gov/vuln/detail/CVE-2026-47266"
],
"provider_metadata": {
"cwe_ids": [
"CWE-639"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47266.json"
}
},
"related_cves": [
{
"value": "CVE-2026-47266",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 493383,
"published_at": "2026-05-29T19:03:43.175+00:00"
}