Medium 4.0Published Jan 23, 2026

CVE-2021-47899YetiShare File Hosting Script 5.1.0 Remote File Upload SSRF Vulnerability

Updated under an hour ago (Oct 27, 2026, 5:00 AM ET)

Does this affect you?

It affects Mfscripts YetiShare File Hosting Script. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Mfscripts YetiShare File Hosting Script

Exploited in the last 30 days

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: 4.0 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-434
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Mfscripts YetiShare File Hosting Script mfscripts:yetishare_file_hosting_script (from the name)	v5.1.0	CNA record

References

References

https://www.exploit-db.com/exploits/49534	exploit
https://mfscripts.com	product
https://yetishare.com	product
https://www.vulncheck.com/advisories/yetishare-file-hosting-script-remote-file-upload-ssrf-vulnerability	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.