{"cve":"CVE-2026-47684","nvd":{"published":"2026-06-16T15:16:41.063","modified":"2026-10-25T23:10:00.167","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","score":7.7},"cwes":["CWE-918"],"references":["https://github.com/Sync-in/server/releases/tag/v2.3.0","https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg","https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg"],"products":[],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-47684","score":0.00222,"percentile":0.12599,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-q4x5-8cj6-52wg","url":"https://osv.dev/vulnerability/GHSA-q4x5-8cj6-52wg","summary":"Sync-in Server: SSRF protection bypass via IPv4-mapped IPv6 addresses in regExpPrivateIP","modified":"2026-07-08T17:45:18.193904281Z","packages":[{"ecosystem":"npm","name":"@sync-in/server","purl":"pkg:npm/%40sync-in/server","ranges":["<2.3.0"],"fixed":["2.3.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}