What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-23 · updated 2026-06-17
• Weakness: CWE-434

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.

Affected products

• Mfscripts YetiShare File Hosting Script: v5.1.0

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
• https://www.exploit-db.com/exploits/49534

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