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1 vulnerability found for Topcontent by Unknown
CVE-2026-88903 (GCVE-0-2026-88903)
Vulnerability from cvelistv5
Published
2026-10-11 06:00
Modified
2026-10-11 11:32
Severity ?
VLAI Severity ?
EPSS score ?
Summary
The Topcontent WordPress plugin through 1.2.1 does not properly authorise one of its request handlers and disables HTML sanitisation before storing the submitted content, allowing unauthenticated attackers to publish arbitrary posts containing malicious JavaScript on any site where its API key has never been configured.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Unknown | Topcontent |
Version: 0 ≤ 1.2.1 |
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"containers": {
"adp": [
{
"metrics": [
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-88903",
"options": [
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},
{
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{
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],
"role": "CISA Coordinator",
"timestamp": "2026-10-11T11:20:16.185589Z",
"version": "2.0.3"
},
"type": "ssvc"
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}
],
"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": "2026-10-11T11:32:42.722Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Topcontent",
"vendor": "Unknown",
"versions": [
{
"lessThanOrEqual": "1.2.1",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
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],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Naoki Kawahigashi"
},
{
"lang": "en",
"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Topcontent WordPress plugin through 1.2.1 does not properly authorise one of its request handlers and disables HTML sanitisation before storing the submitted content, allowing unauthenticated attackers to publish arbitrary posts containing malicious JavaScript on any site where its API key has never been configured."
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],
"problemTypes": [
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"descriptions": [
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"description": "CWE-79 Cross-Site Scripting (XSS)",
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"providerMetadata": {
"dateUpdated": "2026-10-11T06:00:16.273Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
"tags": [
"exploit",
"vdb-entry",
"technical-description"
],
"url": "https://wpscan.com/vulnerability/173b07dd-6404-49c0-9e01-90b5b68d1dec/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Topcontent \u003c= 1.2.1 - Unauthenticated Stored XSS via Content Webhook",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
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"cveId": "CVE-2026-88903",
"datePublished": "2026-10-11T06:00:16.273Z",
"dateReserved": "2026-09-10T12:14:29.360Z",
"dateUpdated": "2026-10-11T11:32:42.722Z",
"state": "PUBLISHED"
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