CVE-2026-33953
Received Received - Intake
Server-Side Request Forgery in LinkAce Allows Internal Access

Publication date: 2026-03-27

Last updated on: 2026-03-31

Assigner: GitHub, Inc.

Description
LinkAce is a self-hosted archive to collect website links. Versions prior to 2.5.3 block direct requests to private IP literals, but still performs server-side requests to internal-only resources when those resources are referenced through an internal hostname. This allows an authenticated user to trigger server-side requests to internal services reachable by the LinkAce server but not directly reachable by an external user. Version 2.5.3 patches the issue.
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Meta Information
Published
2026-03-27
Last Modified
2026-03-31
Generated
2026-06-16
AI Q&A
2026-03-28
EPSS Evaluated
2026-06-15
NVD
CVE-2026-33953
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linkace linkace to 2.5.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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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.
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Executive Summary

The vulnerability exists in LinkAce versions prior to 2.5.3, a self-hosted archive for collecting website links. Although these versions block direct requests to private IP addresses, they still allow server-side requests to internal-only resources if those resources are referenced through an internal hostname. This means an authenticated user can cause the LinkAce server to make requests to internal services that are not accessible directly from outside the network.

Mitigation Strategies

To mitigate this vulnerability, upgrade LinkAce to version 2.5.3 or later, as this version patches the issue.

Impact Analysis

This vulnerability can allow an authenticated user to access internal services that are normally protected from external access. This could lead to unauthorized information disclosure or interaction with internal systems, potentially compromising sensitive data or internal network security.

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