---
id: "CVE-2026-111936"
kind: "vulnerability"
aliases: ["CVE-2026-111936"]
title: "Sigma File Manager: extension downloads can reach internal addresses via SSRF"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "sigma-file-manager"]
not_affected_if: ["default-config"]
published_at: "2026-10-19T14:17:01+00:00"
first_seen_at: "2026-10-23T21:57:18+00:00"
updated_at: "2026-10-25T04:25:09+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111936", "first_seen_at": "2026-10-23T21:57:18+00:00"}]
---

# Sigma File Manager: extension downloads can reach internal addresses via SSRF

Sigma File Manager through 2.2.0 does not check resolved IP addresses when downloading extensions, so a malicious extension or catalog entry can point a download at loopback, private network, or cloud metadata hosts. Responses from those internal hosts can be read back from files written to the extension directory.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:18+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-111936

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_