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CVE-2026-8466 Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy

🗓️ 13 May 2026 18:26:21Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 31 Views

Unbounded buffer growth in cowboy multipart header parsing enables denial of service.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-8466
13 May 202618:26
attackerkb
CBLMariner
CVE-2026-8466 affecting package rabbitmq-server for versions less than 3.13.7-4
2 Jun 202602:56
cbl_mariner
CNNVD
Cowboy 安全漏洞
13 May 202600:00
cnnvd
CVE
CVE-2026-8466
13 May 202618:26
cve
Debian CVE
CVE-2026-8466
13 May 202618:26
debiancve
EUVD
EUVD-2026-30133
13 May 202621:32
euvd
EUVD
EUVD-2026-30266
20 May 202615:35
euvd
Github Security Blog
Cowboy: Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy
13 May 202621:32
github
Microsoft CVE
Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy
27 May 202608:18
mscve
NVD
CVE-2026-8466
13 May 202619:17
nvd
Rows per page
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:ninenines:cowboy:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "cowboy_req"
    ],
    "packageName": "cowboy",
    "packageURL": "pkg:hex/cowboy",
    "product": "cowboy",
    "programFiles": [
      "src/cowboy_req.erl"
    ],
    "programRoutines": [
      {
        "name": "cowboy_req:read_part/1"
      },
      {
        "name": "cowboy_req:read_part/2"
      },
      {
        "name": "cowboy_req:read_part/3"
      }
    ],
    "repo": "https://github.com/ninenines/cowboy",
    "vendor": "ninenines",
    "versions": [
      {
        "lessThan": "2.15.0",
        "status": "affected",
        "version": "2.0.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:ninenines:cowboy:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "cowboy_req"
    ],
    "packageName": "ninenines/cowboy",
    "packageURL": "pkg:github/ninenines/cowboy",
    "product": "cowboy",
    "programFiles": [
      "src/cowboy_req.erl"
    ],
    "programRoutines": [
      {
        "name": "cowboy_req:read_part/1"
      },
      {
        "name": "cowboy_req:read_part/2"
      },
      {
        "name": "cowboy_req:read_part/3"
      }
    ],
    "repo": "https://github.com/ninenines/cowboy",
    "vendor": "ninenines",
    "versions": [
      {
        "lessThan": "5c6a2061b41bb5771c4659fac7d5a822dca5bafb",
        "status": "affected",
        "version": "917cf99e10c41676183d501b86af6e47c95afb89",
        "versionType": "git"
      }
    ]
  }
]

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