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CVE-2026-73213 Coturn: `addr_less_eq()` does a component-wise IPv6 comparison instead of a lexicographic one, letting an authenticated TURN client bypass `denied-peer-ip`/`allowed-peer-ip` IPv6 ranges (TURN-specific SSRF)

🗓️ 11 Aug 2026 17:33:12Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Coturn pre-4.16.0 IPv6 addr_less_eq() flaw lets authenticated TURN clients bypass denied-peer-ip ranges.

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ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-73213
11 Aug 202617:33
cve
euvd
EUVD
EUVD-2026-56819
11 Aug 202617:33
euvd
nvd
NVD
CVE-2026-73213
11 Aug 202618:18
nvd
[
  {
    "vendor": "coturn",
    "product": "coturn",
    "versions": [
      {
        "version": "< 4.16.0",
        "status": "affected"
      }
    ]
  }
]

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11 Aug 2026 17:33Current
CVSS 45.8
4