CVE-2021-47899

YetiShare File Hosting Script 5.1.0 Remote File Upload SSRF Vulnerability

CVSS 6.9 MEDIUMEPSS 0.3%CWE-434

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.9EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

Affected products

Mfscripts · YetiShare File Hosting Script

References

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