CVE-2026-12400 (GCVE-0-2026-12400)
Vulnerability from cvelistv5 – Published: 2026-07-10 07:48 – Updated: 2026-07-10 07:48
VLAI
EPSS
VEX
Title
FlowForms <= 1.1.1 - Authenticated (Contributor+) Insecure Direct Object Reference to Arbitrary Form Modification via REST API '/flowforms/v1/forms/{id}' Endpoints
Summary
The FlowForms – Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.1 via the update_form due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to modify the content, design, and settings of, as well as publish or revert, any form on the site — including forms owned by administrators — by supplying an arbitrary form ID in the REST URL.
Severity
4.3 (Medium)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| priyanshuchaudhary | FlowForms – Conversational Form Builder |
Affected:
0 , ≤ 1.1.1
(semver)
|
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "FlowForms \u2013 Conversational Form Builder",
"vendor": "priyanshuchaudhary",
"versions": [
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"lessThanOrEqual": "1.1.1",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
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"lang": "en",
"type": "finder",
"value": "Aliyan Khan"
}
],
"descriptions": [
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"value": "The FlowForms \u2013 Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.1 via the update_form due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to modify the content, design, and settings of, as well as publish or revert, any form on the site \u2014 including forms owned by administrators \u2014 by supplying an arbitrary form ID in the REST URL."
}
],
"metrics": [
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"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
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"cweId": "CWE-639",
"description": "CWE-639 Authorization Bypass Through User-Controlled Key",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-10T07:48:43.100Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7f4e6133-f833-4da2-af4a-e7e7fcedfe3c?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L493"
},
{
"url": "https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L48"
},
{
"url": "https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L562"
},
{
"url": "https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L603"
},
{
"url": "https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L654"
},
{
"url": "https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L694"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3577870%40flowforms\u0026new=3577870%40flowforms"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-07-09T19:17:45.000Z",
"value": "Disclosed"
}
],
"title": "FlowForms \u003c= 1.1.1 - Authenticated (Contributor+) Insecure Direct Object Reference to Arbitrary Form Modification via REST API \u0027/flowforms/v1/forms/{id}\u0027 Endpoints"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-12400",
"datePublished": "2026-07-10T07:48:43.100Z",
"dateReserved": "2026-06-16T13:34:11.451Z",
"dateUpdated": "2026-07-10T07:48:43.100Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-12400",
"date": "2026-07-13",
"epss": "0.00226",
"percentile": "0.1319"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-12400\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2026-07-10T09:16:52.553\",\"lastModified\":\"2026-07-10T15:43:30.330\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The FlowForms \u2013 Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.1 via the update_form due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to modify the content, design, and settings of, as well as publish or revert, any form on the site \u2014 including forms owned by administrators \u2014 by supplying an arbitrary form ID in the REST URL.\"}],\"affected\":[{\"source\":\"security@wordfence.com\",\"affectedData\":[{\"vendor\":\"priyanshuchaudhary\",\"product\":\"FlowForms \u2013 Conversational Form Builder\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"1.1.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-639\"}]}],\"references\":[{\"url\":\"https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L48\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L493\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L562\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L603\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L654\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L694\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3577870%40flowforms\u0026new=3577870%40flowforms\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/7f4e6133-f833-4da2-af4a-e7e7fcedfe3c?source=cve\",\"source\":\"security@wordfence.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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