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CVE-2026-56819

🗓️ 21 Jul 2026 22:11:17Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 12 Views

Netty HTTP/2 decompressor leaks a direct ByteBuf per DATA frame when closed, causing memory exhaustion; fixed in 4.1.136.Final and 4.2.16.Final.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2026-56819
22 Jul 202601:00
circl
Cvelist
CVE-2026-56819 Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel is already closed (Direct memory leak / OOM DoS)
21 Jul 202622:11
cvelist
EUVD
EUVD-2026-47581
21 Jul 202622:11
euvd
NVD
CVE-2026-56819
21 Jul 202623:17
nvd
Positive Technologies
PT-2026-63258
21 Jul 202600:00
ptsecurity
Vulners
Node
OR
nettynettyRange4.2.0.Final4.2.16.Final
nettynettyRange4.1.0.Final4.1.136.Final
[
  {
    "vendor": "netty",
    "product": "netty",
    "versions": [
      {
        "version": ">= 4.2.0.Final, < 4.2.16.Final",
        "status": "affected"
      },
      {
        "version": ">= 4.1.0.Final, < 4.1.136.Final",
        "status": "affected"
      }
    ]
  }
]

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21 Jul 2026 23:17Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.5
12