---
id: "CVE-2026-68507"
page: "https://infrastack.ai/live/CVE-2026-68507"
kind: "vulnerability"
aliases: ["CVE-2026-68507"]
title: "ideon: unauthenticated link-preview endpoint lets anyone make server fetch URLs"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["ideon", "package", "self-hosted"]
not_affected_if: ["version-0.9.5-or-later"]
published_at: "2026-11-11T21:16:47+00:00"
first_seen_at: "2026-11-11T21:29:09+00:00"
updated_at: "2026-11-11T21:30:48+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68507", "first_seen_at": "2026-11-11T21:29:09+00:00"}]
exploit_sources: []
---

# ideon: unauthenticated link-preview endpoint lets anyone make server fetch URLs

Link for people: https://infrastack.ai/live/CVE-2026-68507 (this .md is for agents)

ideon, a self-hosted visual workspace, has a link-preview endpoint that needs no login and forwards any caller-supplied URL into a server-side fetch. Its SSRF guard has a gap that lets requests reach the server's own loopback interface via 0.0.0.0.

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

## How to check

- Check the installed ideon version; affected versions are those before `0.9.5`.
- Confirm whether the link-preview route is reachable from the network without logging in.

## Fix

- ideon: upgrade to `0.9.5`.

## Timeline

- 2026-11-11T21:29:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-68507

## Documents

- [advisory] Vendor advisory: github.com https://github.com/3xpyth0n/ideon/security/advisories/GHSA-vpc2-r395-534p
- [fix] Release notes: github.com https://github.com/3xpyth0n/ideon/releases/tag/v0.9.5

## From the sources

ideon is a self-hosted visual workspace. Prior to version 0.9.5, ideon's link-preview endpoint requires no authentication at all and forwards any URL a caller supplies straight into a server-side fetch. The app does have a general-purpose SSRF guard (safeFetch/validateSafeUrl in src/app/lib/ssrf.ts), but this route sits behind no login check whatsoever, making it a fully open, anonymous URL-fetch relay - and the guard's IP blocklist itself has a gap that lets it reach the server's own loopback interface via the 0.0.0.0 "any address" bypass, a well-documented SSRF-filter evasion technique on Linux. This issue has been patched in version 0.9.5.

---

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