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vuln-cve/data/2026/11xxx/CVE-2026-11976.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-11976",
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"state": "PUBLISHED",
"assignerShortName": "WPScan",
"dateReserved": "2026-06-11T12:56:22.681Z",
"datePublished": "2026-08-06T16:40:18.955Z",
"dateUpdated": "2026-08-07T13:47:29.290Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan",
"dateUpdated": "2026-08-06T16:40:18.955Z"
},
"title": "MonsterInsights Pro 10.2.0/10.2.2 - Backdoored via AWS S3 bucket compromise",
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-912 Hidden Functionality",
"lang": "en",
"type": "CWE"
}
]
}
],
"affected": [
{
"vendor": "Unknown",
"product": "MonsterInsights Pro",
"versions": [
{
"status": "affected",
"versionType": "semver",
"version": "10.2.0",
"lessThan": "11.0.0"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "The official MonsterInsights Pro update distribution bucket (`monster-insights.s3.amazonaws.com`) was compromised. Both the current release (10.2.2) and the version MonsterInsights rolled back to (10.2.0) contain a malicious file, `class-system-check.php`. Three distinct variants were observed on 2026-06-11, all sharing the same AES-256-GCM key, confirming a single threat actor. The attacker retains write access to the S3 bucket and has been actively iterating on the payload throughout the day."
}
],
"references": [
{
"url": "https://wpscan.com/vulnerability/d1250410-b919-4a90-8cf2-04031f9e5e2b/",
"tags": [
"exploit",
"vdb-entry",
"technical-description"
]
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"baseScore": 10,
"baseSeverity": "CRITICAL"
}
}
],
"credits": [
{
"lang": "en",
"value": "Mike Gozdiskowski",
"type": "finder"
},
{
"lang": "en",
"value": "WPScan",
"type": "coordinator"
}
],
"source": {
"discovery": "EXTERNAL"
},
"x_generator": {
"engine": "WPScan CVE Generator"
}
},
"adp": [
{
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-912",
"lang": "en",
"description": "CWE-912 Hidden Functionality"
}
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-07T13:46:49.330878Z",
"id": "CVE-2026-11976",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-07T13:47:29.290Z"
}
}
]
}
}