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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History

Wed, 11 Nov 2026 21:15:00 +0000

Type Values Removed Values Added
Description 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.
Title ideon: Unauthenticated /api/links/preview endpoint is an open SSRF relay, and its IP blocklist misses the 0.0.0.0/:: unspecified-address bypass
Weaknesses CWE-306
CWE-918
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-11-11T20:57:49.243Z

Reserved: 2026-07-30T16:19:08.081Z

Link: CVE-2026-68507

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-11T21:16:47.057

Modified: 2026-11-11T21:16:47.057

Link: CVE-2026-68507

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses