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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00058.

Exploitation poc

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mfscripts YetiShare File Hosting Script affected
Version Status Constraints
v5.1.0 affected —

No data.

No data.

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Vendors Products
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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://mfscripts.com cve-icon cve-icon
https://www.exploit-db.com/exploits/49534 cve-icon cve-icon cve-icon
https://www.vulncheck.com/advisories/yetishare-file-hosting-script-remote-file-upload-ssrf-vulnerability cve-icon cve-icon
https://yetishare.com cve-icon cve-icon
History

Mon, 26 Jan 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Mfscripts
Mfscripts yetishare
Vendors & Products Mfscripts
Mfscripts yetishare

Fri, 23 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 23 Jan 2026 17:00:00 +0000

Type Values Removed Values Added
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.
Title YetiShare File Hosting Script 5.1.0 Remote File Upload SSRF Vulnerability
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-23T21:47:48.936Z

Reserved: 2026-01-18T12:35:05.176Z

Link: CVE-2021-47899

cve-icon Vulnrichment

Updated: 2026-01-23T21:01:35.571Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-23T17:16:02.120

Modified: 2026-01-26T15:03:33.357

Link: CVE-2021-47899

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-26T11:53:13Z

Weaknesses