{"id":"CVE-2026-47684","sourceIdentifier":"security-advisories@github.com","published":"2026-06-16T15:16:41.063","lastModified":"2026-06-17T10:54:37.403","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"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":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"Sync-in","product":"server","versions":[{"version":"< 2.3.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":4.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-16T17:01:38.857420Z","id":"CVE-2026-47684","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-918"}]}],"references":[{"url":"https://github.com/Sync-in/server/releases/tag/v2.3.0","source":"security-advisories@github.com"},{"url":"https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg","source":"security-advisories@github.com"},{"url":"https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}