CVE-2026-47684
Last modified
CVE-2026-47684 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. 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. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-47684?
How severe is CVE-2026-47684?
How do I fix CVE-2026-47684?
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-47672epa4all-client is the Java Client for epa4all / ePA 3.0 in t…6.5
- CVE-2026-47673Hono is a Web application framework that provides support fo…6.5
- CVE-2026-47674Hono is a Web application framework that provides support fo…5.3
- CVE-2026-47675Hono is a Web application framework that provides support fo…5.3
- CVE-2026-47676Hono is a Web application framework that provides support fo…5.3
- CVE-2026-47682CVAT is an open source interactive video and image annotatio…7.1
- CVE-2026-47685FOG is a free open-source cloning/imaging/rescue suite/inven…8.7
- CVE-2026-47687FOG is a free open-source cloning/imaging/rescue suite/inven…8.7
- CVE-2026-47688FOG is a free open-source cloning/imaging/rescue suite/inven…8.2
- CVE-2026-47689FOG is a free open-source cloning/imaging/rescue suite/inven…5.2
- CVE-2026-4769Certain devices in the WAGO System I/O Field series activate…9.8
- CVE-2026-47690MeltanoHub is the source code for hub.meltano.com, the centr…7.5
Are you affected by CVE-2026-47684?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST