WebSocket endless loop

{
  "id": "ee88cbe5ce58005681193fc28e42c0cfac4b38bfea60c1f4de87d07f49e15250",
  "url": "https://osv.dev/vulnerability/CURL-CVE-2025-5399",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "WebSocket endless loop",
    "summary": "Due to a mistake in libcurl's WebSocket code, a malicious server can send a particularly crafted packet which makes libcurl get trapped in an endless busy-loop. There is no other way for the application to escape or exit this loop other than killing the thread/process. This might be used to DoS libcurl-using application.",
    "evidence": "osv:CURL-CVE-2025-5399",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CURL-CVE-2025-5399",
      "aliases": [
        "CURL-CVE-2025-5399",
        "CVE-2025-5399"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "8.13.0"
                },
                {
                  "fixed": "8.14.1"
                }
              ]
            },
            {
              "repo": "https://github.com/curl/curl.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3588df9478d7c27046b34cdb510728a26bedabc7"
                },
                {
                  "fixed": "d1145df24de8f80e6b167fbc4f28b86bcd0c6832"
                }
              ]
            }
          ],
          "versions": [
            "8.14.0",
            "8.13.0",
            "curl-8_14_0",
            "curl-8_13_0"
          ],
          "database_specific": {
            "source": "https://curl.se/docs/CURL-CVE-2025-5399.json",
            "vanir_signatures": [
              {
                "id": "CURL-CVE-2025-5399-5c67c32b",
                "digest": {
                  "length": 3224,
                  "function_hash": "246136244445171702857622217714330817191"
                },
                "source": "https://github.com/curl/curl.git/commit/d1145df24de8f80e6b167fbc4f28b86bcd0c6832",
                "target": {
                  "file": "lib/ws.c",
                  "function": "curl_ws_send"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CURL-CVE-2025-5399-7940916e",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "205927081312732682779716038169572163720",
                    "200262896965368108989613347175457420328",
                    "191061302736480628505507033467536312329",
                    "305720063265502571742731976555669608845"
                  ]
                },
                "source": "https://github.com/curl/curl.git/commit/d1145df24de8f80e6b167fbc4f28b86bcd0c6832",
                "target": {
                  "file": "lib/ws.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-25T01:04:36Z"
          }
        }
      ],
      "modified": "2026-10-25T01:04:36.094097253Z",
      "provider": "osv",
      "references": [],
      "provider_metadata": {
        "CWE": {
          "id": "CWE-835",
          "desc": "Loop with Unreachable Exit Condition ('Infinite Loop')"
        },
        "URL": "https://curl.se/docs/CVE-2025-5399.json",
        "www": "https://curl.se/docs/CVE-2025-5399.html",
        "award": {
          "amount": "505",
          "currency": "USD"
        },
        "issue": "https://hackerone.com/reports/3168039",
        "affects": "lib",
        "package": "curl",
        "severity": "Low",
        "last_affected": "8.14.0"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-5399",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 444265,
  "published_at": "2025-06-04T08:00:00+00:00"
}