CVE-2026-47684

Published: Jun 16, 2026Modified: Jun 17, 2026Deferred

7.7

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploitability: 3.1 / Impact: 4.0

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-918

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

References (3)

https://github.com/Sync-in/server/releases/tag/v2.3.0

Source: security-advisories@github.com

https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg

Source: security-advisories@github.com

https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.