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This changelog provides information on changes across the Fastly platform, including to the VCL language, our public API, CLI, Terraform provider, Compute Rust SDK, Compute JavaScript SDK, Compute Go SDK and Next-Gen WAF.

• December 12, 2025
  Next-Gen WAF announcementsAdditions

  Added virtual patch for CVE-2025-55183 (React Leaking Server Functions)

• December 12, 2025
  Next-Gen WAF announcementsAdditions

  Added virtual patch for CVE-2025-55184 (React DoS)

• December 11, 2025
  APIAdditions

  Add NGWAF Bot Analysis Request Count

• December 11, 2025
  JavaScript SDKAdditions

  JavaScript SDK 3.37.0

• December 9, 2025
  APIAdditions

  Add Domain Inspector on Compute, Compute response status metrics

• December 5, 2025
  Next-Gen WAF announcementsAdditions

  CVE-2025-55182 virtual patch enabled by default

• December 3, 2025
  Next-Gen WAF announcementsAdditions

  Protection from CVE-2025-55182 (React) and CVE-2025-66478 (Next.js)

• December 1, 2025
  APIAdditions

  Add API Security

• November 18, 2025
  APIAdditions

  Add DDoS Protection Event Detection Stats

• November 18, 2025
  APIAdditions

  Add imgopto_compute_requests to Historical and Real-Time Stats APIs