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CVE Vulnerability Details :
CVE-2026-47684
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-16 Jun, 2026 | 14:31
Updated At-16 Jun, 2026 | 17:10
Rejected At-
▼CVE Numbering Authority (CNA)
Sync-in Server: SSRF protection bypass via IPv4-mapped IPv6 addresses in regExpPrivateIP

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.

Affected Products
Vendor
Sync-in
Product
server
Versions
Affected
  • < 2.3.0
Problem Types
TypeCWE IDDescription
CWECWE-918CWE-918: Server-Side Request Forgery (SSRF)
Type: CWE
CWE ID: CWE-918
Description: CWE-918: Server-Side Request Forgery (SSRF)
Metrics
VersionBase scoreBase severityVector
3.17.7HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Version: 3.1
Base score: 7.7
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg
x_refsource_CONFIRM
https://github.com/Sync-in/server/releases/tag/v2.3.0
x_refsource_MISC
Hyperlink: https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/Sync-in/server/releases/tag/v2.3.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg
exploit
Hyperlink: https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg
Resource:
exploit
Details not found