CVE-2021-47860

GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
http://get-simple.info	Product
https://github.com/GetSimpleCMS/GetSimpleCMS	Product
https://github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce	Exploit Third Party Advisory
https://www.exploit-db.com/exploits/49712	Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/49816	Exploit Third Party Advisory VDB Entry
https://www.vulncheck.com/advisories/getsimple-cms-custom-js-csrf-to-xss-to-rce	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:get-simple:getsimplecms:0.1:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-21 18:16

Updated : 2026-03-06 20:10

NVD link : CVE-2021-47860

Mitre link : CVE-2021-47860

CVE.ORG link : CVE-2021-47860

JSON object : View

Products Affected

get-simple

getsimplecms

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

{"id": "CVE-2021-47860", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.5, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-01-21T18:16:17.100", "references": [{"url": "http://get-simple.info", "tags": ["Product"], "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/GetSimpleCMS/GetSimpleCMS", "tags": ["Product"], "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce", "tags": ["Exploit", "Third Party Advisory"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.exploit-db.com/exploits/49712", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.exploit-db.com/exploits/49816", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/getsimple-cms-custom-js-csrf-to-xss-to-rce", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-352"}]}], "descriptions": [{"lang": "en", "value": "GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page."}, {"lang": "es", "value": "El plugin GetSimple CMS Custom JS 0.1 contiene una vulnerabilidad de falsificaci\u00f3n de petici\u00f3n en sitios cruzados que permite a atacantes no autenticados inyectar c\u00f3digo arbitrario del lado del cliente en los navegadores de los administradores. Los atacantes pueden crear un sitio web malicioso que activa una carga \u00fatil de cross-site scripting para ejecutar c\u00f3digo remoto en el servidor de alojamiento cuando un administrador autenticado visita la p\u00e1gina."}], "lastModified": "2026-03-06T20:10:32.250", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:get-simple:getsimplecms:0.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F6823617-6892-4DC2-8256-CB041DEC5396"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}