VULNERABILITY INTELLIGENCE
CVE-2026-47684
CVSS score7.7 HIGH
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-06-16
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
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.
Weakness classification
- security-advisories@github.com: CWE-918