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CVE-2026-48516 MessagePack-CSharp: InterfaceLookupFormatter bypasses collision-resistant comparer settings

🗓️ 22 Jun 2026 21:09:51Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

InterfaceLookupFormatter uses default comparer, enabling hash collision denial of service on ILookup; fixed in two point five three oh one and three one seven.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-48516
22 Jun 202621:09
attackerkb
CVE
CVE-2026-48516
22 Jun 202621:09
cve
EUVD
EUVD-2026-38380
22 Jun 202621:09
euvd
NVD
CVE-2026-48516
22 Jun 202622:16
nvd
Positive Technologies
PT-2026-51400
22 Jun 202600:00
ptsecurity
[
  {
    "vendor": "MessagePack-CSharp",
    "product": "MessagePack-CSharp",
    "versions": [
      {
        "version": ">= 3.1.7, < 3.1.7",
        "status": "affected"
      },
      {
        "version": "< 2.5.301",
        "status": "affected"
      }
    ]
  }
]

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