CVE-2026-11437

Deferred Deferred - Pending Action

Server-Side Request Forgery in Perfree Go-FastDFS-Web

Publication date: 2026-06-06

Last updated on: 2026-06-08

Assigner: VulDB

Description

A flaw has been found in perfree go-fastdfs-web up to 1.3.7. Affected is the function checkServer of the file /install/checkServer of the component Installation Endpoint. Executing a manipulation can lead to server-side request forgery. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-06

Last Modified

2026-06-08

Generated

2026-07-17

AI Q&A

2026-06-06

EPSS Evaluated

2026-07-15

NVD

CVE-2026-11437

EUVD

EUVD-2026-34972

Affected Vendors & Products

Vendor	Product	Version / Range
perfree	go-fastdfs-web	to 1.3.7 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

This vulnerability is a flaw found in the perfree go-fastdfs-web software up to version 1.3.7, specifically in the checkServer function of the /install/checkServer component. It allows an attacker to perform server-side request forgery (SSRF) by manipulating the function remotely.

Server-side request forgery means that an attacker can make the server send unauthorized requests to other internal or external systems, potentially bypassing security controls.

The vulnerability has a published exploit and the vendor did not respond to the disclosure.

Impact Analysis

This vulnerability can impact you by allowing an attacker to make the affected server send unauthorized requests to other systems, which can lead to information disclosure, unauthorized access, or further attacks within your network.

Because the attack can be executed remotely without any authentication, it increases the risk of exploitation.

The CVSS scores indicate a high severity with potential impacts on confidentiality, integrity, and availability.

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