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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-8891",
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"state": "PUBLISHED",
"assignerShortName": "Wordfence",
"dateReserved": "2026-05-18T20:50:09.614Z",
"datePublished": "2026-05-27T05:31:27.284Z",
"dateUpdated": "2026-05-27T10:35:13.126Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence",
"dateUpdated": "2026-05-27T05:31:27.284Z"
},
"affected": [
{
"vendor": "bitform",
"product": "BitForm – Data management solution for WordPress",
"versions": [
{
"version": "0",
"status": "affected",
"lessThanOrEqual": "1.1.0",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "The BitForm plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'bitform' shortcode in versions up to, and including, 1.1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes ('width' and 'height') in the Shortcode::shortcode() function, which are interpolated directly into the 'style' attribute of an <iframe> element. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."
}
],
"title": "BitForm <= 1.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes",
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/71167dec-38ec-4eb3-8fab-25eca0f8b071?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/Common/Shortcode.php#L17"
},
{
"url": "https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/Common/Shortcode.php#L13"
},
{
"url": "https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/index.php#L54"
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"cweId": "CWE-79",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"baseScore": 6.4,
"baseSeverity": "MEDIUM"
}
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Muhammad Yudha - DJ"
}
],
"timeline": [
{
"time": "2026-05-26T17:27:05.000Z",
"lang": "en",
"value": "Disclosed"
}
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-05-27T10:22:11.157406Z",
"id": "CVE-2026-8891",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-05-27T10:35:13.126Z"
}
}
]
}
}