HighFix available

Denial of Service from unchecked request length

Type: advisorySources: OSV

Prior to version 0.4.2, `conduit-hyper` did not check any limit on a request's length before calling `hyper::body::to_bytes`. An attacker could send a malicious request with an abnormally large `Content-Length`, which could lead to a panic if memory allocation failed for that request. In version 0.4.2, `conduit-hyper` sets an internal limit of 128 MiB per request, otherwise returning status 400 ("Bad Request").

Products: conduit-hyper
Affected versions: Not specified
Fixed versions: 0.4.2
CVEs: CVE-2022-39294
Confirmed fixed CVEs: Not specified
Updated in this feed: 30 Oct 2026, 08:42 UTC · Revision 1

Source evidence

Denial of Service from unchecked request length

core-osv · Original source

Published 30 Oct 2022, 12:00 UTC

osv:RUSTSEC-2022-0066

conduit-hyper

Fixed versions: 0.4.2

Complete source record

{
  "id": "c2b3ccd8900c29d5a737872f70fe775ea64c0116a54bbcfc865120d6d4b776af",
  "url": "https://osv.dev/vulnerability/RUSTSEC-2022-0066",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Denial of Service from unchecked request length",
    "summary": "Prior to version 0.4.2, `conduit-hyper` did not check any limit on a request's length before calling `hyper::body::to_bytes`. An attacker could send a malicious request with an abnormally large `Content-Length`, which could lead to a panic if memory allocation failed for that request. In version 0.4.2, `conduit-hyper` sets an internal limit of 128 MiB per request, otherwise returning status 400 (\"Bad Request\").",
    "evidence": "osv:RUSTSEC-2022-0066",
    "products": [
      {
        "name": {
          "value": "conduit-hyper",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.4.2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RUSTSEC-2022-0066",
      "aliases": [
        "CVE-2022-39294",
        "GHSA-9398-5ghf-7pr6",
        "RUSTSEC-2022-0066"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0.2.0-alpha.3"
                },
                {
                  "fixed": "0.4.2"
                }
              ]
            }
          ],
          "package": {
            "name": "conduit-hyper",
            "purl": "pkg:cargo/conduit-hyper",
            "ecosystem": "crates.io"
          },
          "database_specific": {
            "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "source": "https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2022-0066.json",
            "categories": [
              "denial-of-service"
            ],
            "informational": null
          },
          "ecosystem_specific": {
            "affects": {
              "os": [],
              "arch": [],
              "functions": []
            },
            "affected_functions": null
          }
        }
      ],
      "modified": "2026-10-12T18:00:05.116359517Z",
      "provider": "osv",
      "references": [
        "https://crates.io/crates/conduit-hyper",
        "https://rustsec.org/advisories/RUSTSEC-2022-0066.html",
        "https://github.com/conduit-rust/conduit-hyper/commit/4d225a53206505d39438ec6694e15f49c038baff"
      ],
      "provider_metadata": {
        "license": "CC0-1.0"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-39294",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 306350,
  "published_at": "2022-10-30T12:00:00+00:00"
}