CVE-2021-47899

YetiShare File Hosting Script 5.1.0 contains a server-side request forgery vulnerability that allows attackers to read local system files through the remote file upload feature. Attackers can exploit the url parameter in the url_upload_handler endpoint to access sensitive files like /etc/passwd by using file:/// protocol.

CVSS v3 4.0 MEDIUM

4.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://mfscripts.com
https://www.exploit-db.com/exploits/49534
https://www.vulncheck.com/advisories/yetishare-file-hosting-script-remote-file-upload-ssrf-vulnerability
https://yetishare.com
https://www.exploit-db.com/exploits/49534

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) YetiShare File Hosting Script 5.1.0 contiene una vulnerabilidad de falsificación de petición del lado del servidor que permite a atacantes leer archivos del sistema local a través de la función de carga remota de archivos. Los atacantes pueden explotar el parámetro url en el endpoint url_upload_handler para acceder a archivos sensibles como /etc /passwd utilizando el protocolo file:///.

23 Jan 2026, 22:16

Type	Values Removed	Values Added
References	~~() https://www.exploit-db.com/exploits/49534 -~~	() https://www.exploit-db.com/exploits/49534 -

23 Jan 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-23 17:16

Updated : 2026-06-17 04:18

NVD link : CVE-2021-47899

Mitre link : CVE-2021-47899

CVE.ORG link : CVE-2021-47899

JSON object : View

Products Affected

No product.

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

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