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CVE-2021-47899 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CNA: [email protected]CVSS-B:4 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.exploit-db.com/exploits/49534	CISA-ADP	Exploit
https://mfscripts.com	[email protected]	ProductVendor
https://www.exploit-db.com/exploits/49534	[email protected]	Exploit
https://www.vulncheck.com/advisories/yetishare-file-hosting-script-remote-file-upload-ssrf-vulnerability	[email protected]	AdvisoryExploit
https://yetishare.com	[email protected]	Vendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-434	Unrestricted Upload of File with Dangerous Type	[email protected]

Affected Products

Product	Versions
MFScripts YetiShare File Hosting Script	5.1.0 (semver)
CPE cpe:2.3:a:mfscripts:yetishare:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jan 23, 2026	CVE Modified	CISA-ADP
Jan 23, 2026	New CVE Received	[email protected]