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2 vulnerabilities found for Master Blocks by Unknown
CVE-2026-88824 (GCVE-0-2026-88824)
Vulnerability from nvd – Published: 2026-09-19 06:00 – Updated: 2026-09-19 13:18
VLAI
EPSS
VEX
Title
Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings
Summary
The Master Blocks WordPress plugin before 1.5.0 does not have authorisation on one of its REST routes, allowing unauthenticated users to update its settings, including a value that is output unescaped in the admin area, leading to Stored XSS that executes in the session of any administrator visiting a wp-admin page.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-19 13:12 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/898fda0a-4d27-4d… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Master Blocks |
Affected:
1.4.1 , < 1.5.0
(semver)
|
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],
"source": {
"discovery": "EXTERNAL"
},
"title": "Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings",
"x_generator": {
"engine": "WPScan CVE Generator"
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CVE-2026-88824 (GCVE-0-2026-88824)
Vulnerability from cvelistv5 – Published: 2026-09-19 06:00 – Updated: 2026-09-19 13:18
VLAI
EPSS
VEX
Title
Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings
Summary
The Master Blocks WordPress plugin before 1.5.0 does not have authorisation on one of its REST routes, allowing unauthenticated users to update its settings, including a value that is output unescaped in the admin area, leading to Stored XSS that executes in the session of any administrator visiting a wp-admin page.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-19 13:12 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/898fda0a-4d27-4d… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Master Blocks |
Affected:
1.4.1 , < 1.5.0
(semver)
|
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"integrityImpact": "HIGH",
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},
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],
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"timestamp": "2026-09-19T13:12:08.510452Z",
"version": "2.0.3"
},
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}
}
],
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"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-19T13:18:55.698Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
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"defaultStatus": "unaffected",
"product": "Master Blocks",
"vendor": "Unknown",
"versions": [
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"lessThan": "1.5.0",
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"type": "finder",
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}
],
"problemTypes": [
{
"descriptions": [
{
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"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
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],
"source": {
"discovery": "EXTERNAL"
},
"title": "Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
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