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CVE-2026-58272 Sync-in Server has Username/Login Enumeration via Timing Side-Channel on POST /api/auth/login (incomplete fix of the prior timing-attack advisory)

🗓️ 21 Sep 2026 20:31:46Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 9 Views

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Versions prior to 2.4.1 contain an observable timing discrepancy in the login endpoint because authentication attempts for nonexistent accounts return...

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ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-58272
21 Sep 202620:31
cve
euvd
EUVD
EUVD-2026-84199
21 Sep 202620:31
euvd
nvd
NVD
CVE-2026-58272
21 Sep 202621:17
nvd
[
  {
    "vendor": "Sync-in",
    "product": "server",
    "versions": [
      {
        "version": "< 2.4.1",
        "status": "affected"
      }
    ]
  }
]

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21 Sep 2026 20:31Current
CVSS 3.15.3
9