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CVE-2026-59246 Zero-length HTTP/2 CONTINUATION frames bypass Mint's header-block byte-size cap and exhaust client memory

🗓️ 14 Jul 2026 08:37:04Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Zero-length HTTP/2 CONTINUATION frames bypass header size cap, causing Mint memory exhaustion.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-59246
14 Jul 202608:37
cve
EUVD
EUVD-2026-43643
14 Jul 202608:37
euvd
NVD
CVE-2026-59246
14 Jul 202609:16
nvd
OSV
EEF-CVE-2026-59246 Zero-length HTTP/2 CONTINUATION frames bypass Mint's header-block byte-size cap and exhaust client memory
14 Jul 202608:37
osv
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Mint.HTTP2'"
    ],
    "packageName": "mint",
    "packageURL": "pkg:hex/mint",
    "product": "mint",
    "programFiles": [
      "lib/mint/http2.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Mint.HTTP2':handle_continuation/3"
      },
      {
        "name": "'Elixir.Mint.HTTP2':assert_header_block_within_max_size/2"
      }
    ],
    "repo": "https://github.com/elixir-mint/mint",
    "vendor": "elixir-mint",
    "versions": [
      {
        "lessThan": "1.9.2",
        "status": "affected",
        "version": "0.1.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Mint.HTTP2'"
    ],
    "packageName": "elixir-mint/mint",
    "packageURL": "pkg:github/elixir-mint/mint",
    "product": "mint",
    "programFiles": [
      "lib/mint/http2.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Mint.HTTP2':handle_continuation/3"
      },
      {
        "name": "'Elixir.Mint.HTTP2':assert_header_block_within_max_size/2"
      }
    ],
    "repo": "https://github.com/elixir-mint/mint",
    "vendor": "elixir-mint",
    "versions": [
      {
        "lessThan": "5779de1666344b32aefc4354184ea07f902f73ce",
        "status": "affected",
        "version": "596ca4304504be68939c4929e0831557097962b8",
        "versionType": "git"
      }
    ]
  }
]

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