CVE-2026-4512 (GCVE-0-2026-4512)
Vulnerability from cvelistv5 – Published: 2026-04-23 06:00 – Updated: 2026-04-23 15:50
VLAI?
Title
WP reCaptcha by WebDesignBy < 2.0 – Admin+ Stored XSS
Summary
The reCaptcha by WebDesignBy WordPress plugin before 2.0 does not sanitize or escape the Site Key setting before outputting it in a JavaScript string context via the grecaptcha_js() function. This allows administrators on multisite installations (who do not have the unfiltered_html capability) to inject arbitrary JavaScript that executes for all visitors to the WordPress login page.
Severity ?
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Unknown | reCaptcha by WebDesignBy |
Affected:
0 , < 2.0
(semver)
|
Credits
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"adp": [
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"metrics": [
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 3.5,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N",
"version": "3.1"
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"content": {
"id": "CVE-2026-4512",
"options": [
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{
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"timestamp": "2026-04-23T13:02:44.374627Z",
"version": "2.0.3"
},
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{
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"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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"type": "CWE"
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"providerMetadata": {
"dateUpdated": "2026-04-23T15:50:03.992Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "reCaptcha by WebDesignBy",
"vendor": "Unknown",
"versions": [
{
"lessThan": "2.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Mustafa Ahmed"
},
{
"lang": "en",
"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
"value": "The reCaptcha by WebDesignBy WordPress plugin before 2.0 does not sanitize or escape the Site Key setting before outputting it in a JavaScript string context via the grecaptcha_js() function. This allows administrators on multisite installations (who do not have the unfiltered_html capability) to inject arbitrary JavaScript that executes for all visitors to the WordPress login page."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-79 Cross-Site Scripting (XSS)",
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"providerMetadata": {
"dateUpdated": "2026-04-23T06:00:09.102Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
"tags": [
"exploit",
"vdb-entry",
"technical-description"
],
"url": "https://wpscan.com/vulnerability/6dfb4378-fe6a-4462-af10-8e7504e3d593/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "WP reCaptcha by WebDesignBy \u003c 2.0 \u2013 Admin+ Stored XSS",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
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"dateReserved": "2026-03-20T14:28:42.326Z",
"dateUpdated": "2026-04-23T15:50:03.992Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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"date": "2026-04-23",
"epss": "9e-05",
"percentile": "0.00891"
},
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"vulnrichment": {
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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