CVE-2016-20053

Redaxo CMS 5.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to create administrative user accounts by tricking authenticated administrators into visiting malicious pages. Attackers can craft HTML forms targeting the users endpoint with hidden fields containing admin credentials and account parameters to add new administrator accounts without user consent.

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
https://www.exploit-db.com/exploits/40708	Exploit VDB Entry
https://www.vulncheck.com/advisories/redaxo-cms-cross-site-request-forgery-via-users-endpoint	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:redaxo:redaxo:5.2:*:*:*:*:*:*:*

History

21 Jul 2026, 07:10

Type	Values Removed	Values Added
Summary		(es) Redaxo CMS 5.2 contiene una vulnerabilidad de falsificación de petición en sitios cruzados que permite a atacantes no autenticados crear cuentas de usuario administrativas engañando a administradores autenticados para que visiten páginas maliciosas. Los atacantes pueden elaborar formularios HTML dirigidos al endpoint de usuarios con campos ocultos que contienen credenciales de administrador y parámetros de cuenta para añadir nuevas cuentas de administrador sin el consentimiento del usuario.

14 Apr 2026, 19:08

Type	Values Removed	Values Added
CPE		cpe:2.3:a:redaxo:redaxo:5.2:::::::*
First Time		Redaxo Redaxo redaxo
References	~~() https://www.exploit-db.com/exploits/40708 -~~	() https://www.exploit-db.com/exploits/40708 - Exploit, VDB Entry
References	~~() https://www.vulncheck.com/advisories/redaxo-cms-cross-site-request-forgery-via-users-endpoint -~~	() https://www.vulncheck.com/advisories/redaxo-cms-cross-site-request-forgery-via-users-endpoint - Third Party Advisory

04 Apr 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-04 14:16

Updated : 2026-07-21 07:10

NVD link : CVE-2016-20053

Mitre link : CVE-2016-20053

CVE.ORG link : CVE-2016-20053

JSON object : View

Products Affected

redaxo

redaxo

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

{"id": "CVE-2016-20053", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2016-20053", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-06T13:29:20.630745Z"}}], "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": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/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": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "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"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "Redaxo", "product": "Redaxo CMS", "versions": [{"status": "affected", "version": "5.2"}]}]}], "published": "2026-04-04T14:16:17.700", "references": [{"url": "https://www.exploit-db.com/exploits/40708", "tags": ["Exploit", "VDB Entry"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/redaxo-cms-cross-site-request-forgery-via-users-endpoint", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-352"}]}], "descriptions": [{"lang": "en", "value": "Redaxo CMS 5.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to create administrative user accounts by tricking authenticated administrators into visiting malicious pages. Attackers can craft HTML forms targeting the users endpoint with hidden fields containing admin credentials and account parameters to add new administrator accounts without user consent."}, {"lang": "es", "value": "Redaxo CMS 5.2 contiene una vulnerabilidad de falsificaci\u00f3n de petici\u00f3n en sitios cruzados que permite a atacantes no autenticados crear cuentas de usuario administrativas enga\u00f1ando a administradores autenticados para que visiten p\u00e1ginas maliciosas. Los atacantes pueden elaborar formularios HTML dirigidos al endpoint de usuarios con campos ocultos que contienen credenciales de administrador y par\u00e1metros de cuenta para a\u00f1adir nuevas cuentas de administrador sin el consentimiento del usuario."}], "lastModified": "2026-07-21T07:10:00.117", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:redaxo:redaxo:5.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C748A6B4-0616-4623-8575-CD025800A216"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}