High severity7.7GHSA Advisory· Published Jun 16, 2026· Updated Jun 16, 2026
CVE-2026-47684
CVE-2026-47684
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@sync-in/servernpm | < 2.3.0 | 2.3.0 |
Affected products
1Patches
Vulnerability mechanics
References
3News mentions
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