OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Mar 5, 2026 · NIST NVD

   Detected

   OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory pressure and availability degradation.

2. Jun 17, 2026 · NIST NVD

   Updated

   OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory pressure and availability degradation.

Affected

• cpe openclaw/openclawversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-28478

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-28478

  OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory

  nvd.nist.gov

References

• Patch · github.com
• Vendor Advisory · github.com
• Third Party Advisory · vulncheck.com