CVE-2026-109370 (GCVE-0-2026-109370)
Vulnerability from cvelistv5 – Published: 2026-10-28 06:45 – Updated: 2026-10-28 06:45
VLAI
EPSS
VEX
Title
Document Embedder <= 2.4.0 - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via 'documentSource.doc' Block Attribute
Summary
The Document Embedder – let visitors read files without downloading plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'content (post_content containing block JSON documentSource.doc)' parameter in all versions up to, and including, 2.4.0 due to insufficient input sanitization and output escaping. 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. The payload is triggered specifically when the victim clicks the embedded document's Download button, which causes the de_track_download AJAX fallback path to programmatically create an anchor with the attacker-controlled href and call .click() — a condition reached because supplying docId=0 causes can_read_document() to return false, bypassing the normal download flow.
Severity
6.4 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| bplugins | Document Embedder – let visitors read files without downloading |
Affected:
0 , ≤ 2.4.0
(semver)
|
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Document Embedder \u2013 let visitors read files without downloading",
"vendor": "bplugins",
"versions": [
{
"lessThanOrEqual": "2.4.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
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"type": "finder",
"value": "Wordfence PRISM"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Document Embedder \u2013 let visitors read files without downloading plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the \u0027content (post_content containing block JSON documentSource.doc)\u0027 parameter in all versions up to, and including, 2.4.0 due to insufficient input sanitization and output escaping. 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. The payload is triggered specifically when the victim clicks the embedded document\u0027s Download button, which causes the de_track_download AJAX fallback path to programmatically create an anchor with the attacker-controlled href and call .click() \u2014 a condition reached because supplying docId=0 causes can_read_document() to return false, bypassing the normal download flow."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-28T06:45:19.156Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ad7f7459-943f-42de-b14a-34c8c24763e1?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/build/blocks/document-embed/view.js"
},
{
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/build/blocks/document-embed/render.php#L92"
},
{
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/includes/features/class-bplde-ajaxcall.php#L289"
},
{
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/includes/core/class-bplde-helper-functions.php#L182"
},
{
"url": "https://plugins.trac.wordpress.org/changeset/3751444/document-emberdder/trunk"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3751444%40document-emberdder%2Ftags%2F2.4.1\u0026old=3731835%40document-emberdder%2Ftags%2F2.4.0"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-10-12T14:39:13.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-10-27T17:36:22.000Z",
"value": "Disclosed"
}
],
"title": "Document Embedder \u003c= 2.4.0 - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via \u0027documentSource.doc\u0027 Block Attribute"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-109370",
"datePublished": "2026-10-28T06:45:19.156Z",
"dateReserved": "2026-10-12T14:22:26.994Z",
"dateUpdated": "2026-10-28T06:45:19.156Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": {
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{
"affectedData": [
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"defaultStatus": "unaffected",
"product": "Document Embedder \u2013 let visitors read files without downloading",
"vendor": "bplugins",
"versions": [
{
"lessThanOrEqual": "2.4.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@wordfence.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Document Embedder \u2013 let visitors read files without downloading plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the \u0027content (post_content containing block JSON documentSource.doc)\u0027 parameter in all versions up to, and including, 2.4.0 due to insufficient input sanitization and output escaping. 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. The payload is triggered specifically when the victim clicks the embedded document\u0027s Download button, which causes the de_track_download AJAX fallback path to programmatically create an anchor with the attacker-controlled href and call .click() \u2014 a condition reached because supplying docId=0 causes can_read_document() to return false, bypassing the normal download flow."
}
],
"id": "CVE-2026-109370",
"lastModified": "2026-10-28T07:16:44.270",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.1,
"impactScore": 2.7,
"source": "security@wordfence.com",
"type": "Primary"
}
]
},
"published": "2026-10-28T07:16:44.270",
"references": [
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/build/blocks/document-embed/render.php#L92"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/build/blocks/document-embed/view.js"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/includes/core/class-bplde-helper-functions.php#L182"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/document-emberdder/tags/2.4.0/includes/features/class-bplde-ajaxcall.php#L289"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/changeset/3751444/document-emberdder/trunk"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3751444%40document-emberdder%2Ftags%2F2.4.1\u0026old=3731835%40document-emberdder%2Ftags%2F2.4.0"
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ad7f7459-943f-42de-b14a-34c8c24763e1?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Received",
"weaknesses": [
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"description": [
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"lang": "en",
"value": "CWE-79"
}
],
"source": "security@wordfence.com",
"type": "Primary"
}
]
}
}
}
}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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