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4 vulnerabilities found for Nexter Blocks by Unknown
CVE-2026-17011 (GCVE-0-2026-17011)
Vulnerability from nvd – Published: 2026-08-09 06:00 – Updated: 2026-08-11 19:47
VLAI
EPSS
VEX
Title
Nexter Blocks < 5.0.2 - Contributor+ Stored CSS Injection
Summary
The Nexter Blocks WordPress plugin before 5.0.2 does not restrict who can save global CSS through one of its REST endpoints, allowing users with at least the Contributor role to store arbitrary CSS that is rendered site-wide on the front end, enabling defacement, content hiding, and UI redressing.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 19:45 UTC
CWE
- CWE-345 Insufficient Verification of Data Authenticity
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/a702e5cb-0fb3-41… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Nexter Blocks |
Affected:
0 , < 5.0.2
(semver)
|
{
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"baseScore": 3.8,
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"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L",
"version": "3.1"
}
},
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],
"role": "CISA Coordinator",
"timestamp": "2026-08-11T19:45:35.346584Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-345",
"description": "CWE-345 Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-11T19:47:38.582Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
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"product": "Nexter Blocks",
"vendor": "Unknown",
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"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Vaibhav Narkhede"
},
{
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"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Nexter Blocks WordPress plugin before 5.0.2 does not restrict who can save global CSS through one of its REST endpoints, allowing users with at least the Contributor role to store arbitrary CSS that is rendered site-wide on the front end, enabling defacement, content hiding, and UI redressing."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-345 Insufficient Verification of Data Authenticity",
"lang": "en",
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}
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],
"providerMetadata": {
"dateUpdated": "2026-08-09T06:00:12.345Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
"tags": [
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"vdb-entry",
"technical-description"
],
"url": "https://wpscan.com/vulnerability/a702e5cb-0fb3-419e-81df-fa5b26c81402/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Nexter Blocks \u003c 5.0.2 - Contributor+ Stored CSS Injection",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"cveId": "CVE-2026-17011",
"datePublished": "2026-08-09T06:00:12.345Z",
"dateReserved": "2026-07-24T10:10:03.572Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-15678 (GCVE-0-2025-15678)
Vulnerability from nvd – Published: 2026-08-06 06:00 – Updated: 2026-08-06 14:39
VLAI
EPSS
VEX
Title
Nexter Blocks < 5.0.2 - Author+ Stored XSS via SVG Upload
Summary
The Nexter Blocks WordPress plugin before 5.0.2 does not sanitize uploaded SVG files and allows SVG uploads for any user able to upload files (Author by default), allowing them to upload a file containing malicious JavaScript that executes when the file is accessed, leading to Stored Cross-Site Scripting.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:38 UTC
CWE
- CWE-79 Cross-Site Scripting (XSS)
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/2405c1ef-844a-46… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Nexter Blocks |
Affected:
0 , < 5.0.2
(semver)
|
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"attackVector": "NETWORK",
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"baseScore": 6.1,
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"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
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"options": [
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}
],
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"timestamp": "2026-08-06T14:38:51.611520Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
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"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-06T14:39:13.063Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nexter Blocks",
"vendor": "Unknown",
"versions": [
{
"lessThan": "5.0.2",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Bob Matyas"
},
{
"lang": "en",
"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Nexter Blocks WordPress plugin before 5.0.2 does not sanitize uploaded SVG files and allows SVG uploads for any user able to upload files (Author by default), allowing them to upload a file containing malicious JavaScript that executes when the file is accessed, leading to Stored Cross-Site Scripting."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-79 Cross-Site Scripting (XSS)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-06T06:00:12.369Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
"tags": [
"exploit",
"vdb-entry",
"technical-description"
],
"url": "https://wpscan.com/vulnerability/2405c1ef-844a-462b-8329-c09d33b255b2/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Nexter Blocks \u003c 5.0.2 - Author+ Stored XSS via SVG Upload",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"cveId": "CVE-2025-15678",
"datePublished": "2026-08-06T06:00:12.369Z",
"dateReserved": "2026-07-24T10:09:42.179Z",
"dateUpdated": "2026-08-06T14:39:13.063Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-17011 (GCVE-0-2026-17011)
Vulnerability from cvelistv5 – Published: 2026-08-09 06:00 – Updated: 2026-08-11 19:47
VLAI
EPSS
VEX
Title
Nexter Blocks < 5.0.2 - Contributor+ Stored CSS Injection
Summary
The Nexter Blocks WordPress plugin before 5.0.2 does not restrict who can save global CSS through one of its REST endpoints, allowing users with at least the Contributor role to store arbitrary CSS that is rendered site-wide on the front end, enabling defacement, content hiding, and UI redressing.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 19:45 UTC
CWE
- CWE-345 Insufficient Verification of Data Authenticity
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/a702e5cb-0fb3-41… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Nexter Blocks |
Affected:
0 , < 5.0.2
(semver)
|
{
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"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 3.8,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L",
"version": "3.1"
}
},
{
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"options": [
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],
"role": "CISA Coordinator",
"timestamp": "2026-08-11T19:45:35.346584Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
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"cweId": "CWE-345",
"description": "CWE-345 Insufficient Verification of Data Authenticity",
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}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-11T19:47:38.582Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nexter Blocks",
"vendor": "Unknown",
"versions": [
{
"lessThan": "5.0.2",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Vaibhav Narkhede"
},
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"lang": "en",
"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
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}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-345 Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-09T06:00:12.345Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
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"vdb-entry",
"technical-description"
],
"url": "https://wpscan.com/vulnerability/a702e5cb-0fb3-419e-81df-fa5b26c81402/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Nexter Blocks \u003c 5.0.2 - Contributor+ Stored CSS Injection",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"cveId": "CVE-2026-17011",
"datePublished": "2026-08-09T06:00:12.345Z",
"dateReserved": "2026-07-24T10:10:03.572Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-15678 (GCVE-0-2025-15678)
Vulnerability from cvelistv5 – Published: 2026-08-06 06:00 – Updated: 2026-08-06 14:39
VLAI
EPSS
VEX
Title
Nexter Blocks < 5.0.2 - Author+ Stored XSS via SVG Upload
Summary
The Nexter Blocks WordPress plugin before 5.0.2 does not sanitize uploaded SVG files and allows SVG uploads for any user able to upload files (Author by default), allowing them to upload a file containing malicious JavaScript that executes when the file is accessed, leading to Stored Cross-Site Scripting.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:38 UTC
CWE
- CWE-79 Cross-Site Scripting (XSS)
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/2405c1ef-844a-46… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Nexter Blocks |
Affected:
0 , < 5.0.2
(semver)
|
{
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"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
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"scope": "CHANGED",
"userInteraction": "REQUIRED",
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"version": "3.1"
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"timestamp": "2026-08-06T14:38:51.611520Z",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2026-08-06T14:39:13.063Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nexter Blocks",
"vendor": "Unknown",
"versions": [
{
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"status": "affected",
"version": "0",
"versionType": "semver"
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],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Bob Matyas"
},
{
"lang": "en",
"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
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}
],
"problemTypes": [
{
"descriptions": [
{
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"lang": "en",
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}
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],
"providerMetadata": {
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"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
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],
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}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Nexter Blocks \u003c 5.0.2 - Author+ Stored XSS via SVG Upload",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
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"datePublished": "2026-08-06T06:00:12.369Z",
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"state": "PUBLISHED"
},
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}