CVE-2026-47684

Published June 16th, 2026

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CVSS v3

7.7

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.3.0, the private IP blocklist regex used in the URL download feature does not match IPv4-mapped IPv6 addresses (e.g. ::ffff:127.0.0.1), allowing SSRF protection to be bypassed on dual-stack systems. Version 2.3.0 fixes the issue.

Sync-in/server

Sync-in Server · Open-source platform for file storage, sharing, collaboration, and syncing.

GitHub

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