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CVE-2026-47684 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

CNA: [email protected]CVSS-B:7.7 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg	CISA-ADP	AdvisoryExploitRemedyVendor
https://github.com/Sync-in/server/releases/tag/v2.3.0	[email protected]	Release NotesVendor
https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg	[email protected]	AdvisoryExploitRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-918	Server-Side Request Forgery (SSRF)	[email protected]

Affected Products

Product	Versions
Sync-in Server	<= 2.2.1 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 2.3.0moderate efforthttps://github.com/Sync-in/server/releases/tag/v2.3.0

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 16, 2026	CVE Modified	CISA-ADP
Jun 16, 2026	New CVE Received	[email protected]