{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.38.0"
              },
              {
                "last_affected": "2.38.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "9f5881d5143fd06a328bde2713cd9c61df579289"
            },
            {
              "last_affected": "9f5881d5143fd06a328bde2713cd9c61df579289"
            }
          ],
          "repo": "https://opendev.org/openstack/swift",
          "type": "GIT"
        }
      ],
      "versions": [
        "2.38.0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71190.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "1.9.1"
          },
          {
            "fixed": "2.35.4"
          },
          {
            "introduced": "2.36.0"
          },
          {
            "fixed": "2.36.3"
          },
          {
            "introduced": "2.37.0"
          },
          {
            "fixed": "2.37.3"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking (ReDoS). The \"qdtext\" pattern (?:[^\"]|\\\\.)* allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in the proxy worker. A payload of 32 backslash-character pairs exceeds 30 seconds of CPU time. No authentication is required. Repeated requests can exhaust all proxy worker threads, resulting in a complete denial of service.",
  "id": "CVE-2026-71190",
  "modified": "2026-08-08T03:30:51.134236566Z",
  "published": "2026-08-05T04:54:03.020Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/05/19"
    },
    {
      "type": "WEB",
      "url": "https://opendev.org/openstack/swift"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71190.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71190"
    },
    {
      "type": "ADVISORY",
      "url": "https://openwall.com/lists/oss-security/2026/07/28/27"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.openstack.org/ossa/OSSA-2026-031.html"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/2158771"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ]
}