CVE-2026-111936
Received Received - Intake

Sigma File Manager SSRF via Malicious Extension Download

Publication date: 2026-10-19

Last updated on: 2026-10-19

Assigner: VulnCheck

Description
Sigma File Manager through 2.2.0 contains a server-side request forgery vulnerability because validate_remote_url() in security.rs never checks resolved IP addresses for extension download commands. A malicious extension or catalog entry can use hostnames resolving to loopback, private, or cloud metadata addresses to read internal responses via files written to the extension directory.

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Meta Information

Published
2026-10-19
Last Modified
2026-10-19
Generated
2026-10-19
AI Q&A
2026-10-19
EPSS Evaluated
N/A
NVD
CVE-2026-111936
EUVD
EUVD-2026-104315

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
aleksey-hoffman Sigma File Manager 0

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

Sigma File Manager through 2.2.0 has a server-side request forgery (SSRF) vulnerability in the validate_remote_url() function. This flaw allows a malicious extension or catalog entry to bypass IP address checks when downloading extensions. By using hostnames that resolve to loopback, private, or cloud metadata addresses, attackers can force the application to read internal responses and write files to the extension directory.

Impact Analysis

This vulnerability could allow attackers to access internal network resources or sensitive data by tricking the application into making unauthorized requests. If exploited, it may lead to data leaks, unauthorized file access, or further compromise of the system hosting Sigma File Manager.

Mitigation Strategies

Update Sigma File Manager to the latest version beyond 2.2.0 to address the server-side request forgery vulnerability in extension downloads.

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