{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5e8cb22176e9235e224be0bc530699261eb60e53"
            }
          ],
          "repo": "https://github.com/openclaw/openclaw",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3h52-cx59-c456"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-696"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35640.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "2026.3.25"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "fixed": "2026.3.25"
          }
        ],
        "source": "CPE_FIELD"
      },
      {
        "extracted_events": [
          {
            "fixed": "2026.3.25"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.",
  "id": "CVE-2026-35640",
  "modified": "2026-07-15T01:49:21.644086697Z",
  "published": "2026-04-09T21:27:08.792Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35640.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35640"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsing"
    },
    {
      "type": "FIX",
      "url": "https://github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53"
    }
  ],
  "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:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw \u003c 2026.3.25 - Denial of Service via Unauthenticated Webhook Request Parsing"
}