{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.36.0"
              },
              {
                "fixed": "2.36.2"
              },
              {
                "introduced": "2.37.0"
              },
              {
                "fixed": "2.37.2"
              },
              {
                "introduced": "2.35.1"
              },
              {
                "fixed": "2.35.3"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "82cb5a5d78b91c6af258cd8f06d30f69be90fa18"
            },
            {
              "fixed": "bbd9c5e012d9f4821d67b9dfd538180de63e733b"
            },
            {
              "introduced": "555026d200337b39c97eb9dafd26901ff40c7a1d"
            },
            {
              "fixed": "f701907958c791f10ebb775690b9d21d39d92ae8"
            },
            {
              "introduced": "9ae4dd3321a6f3e410c8221efd27814a1dfd2ece"
            },
            {
              "fixed": "980b5b6987fa8d4ea5cdfa8256b00430d8bfc2d1"
            }
          ],
          "repo": "https://opendev.org/openstack/swift",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49017.json"
  },
  "details": "In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0.",
  "id": "CVE-2026-49017",
  "modified": "2026-07-15T01:48:52.024670206Z",
  "published": "2026-05-27T01:57:58.831Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/27/9"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/02/6"
    },
    {
      "type": "WEB",
      "url": "https://opendev.org/openstack/swift"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49017.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49017"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.launchpad.net/bugs/2152205"
    },
    {
      "type": "FIX",
      "url": "https://review.opendev.org/c/openstack/swift/+/987957"
    },
    {
      "type": "ARTICLE",
      "url": "https://review.opendev.org/c/openstack/swift/+/988093"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L",
      "type": "CVSS_V4"
    }
  ]
}