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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 19, 2025
  JavaScript SDKFixes

  JavaScript SDK 3.38.2

• December 18, 2025
  JavaScript SDKFixesAdditions

  JavaScript SDK 3.38.0

• December 18, 2025
  JavaScript SDKFixes

  JavaScript SDK 3.38.1

• December 16, 2025
  Next-Gen WAF agentChanges

  Next-Gen WAF agent 4.73.0

• December 15, 2025
  APIAdditions

  Next-Gen WAF: Custom dashboards and default dashboards APIs

• December 11, 2025
  APIAdditions

  Add NGWAF Bot Analysis Request Count

• December 11, 2025
  Next-Gen WAF announcementsAdditions

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

• December 11, 2025
  Next-Gen WAF announcementsAdditions

  Added virtual patch for CVE-2025-55184 (React DoS, also covers CVE-2025-67779)

• December 11, 2025
  JavaScript SDKAdditions

  JavaScript SDK 3.37.0

• December 9, 2025
  APIAdditions

  Add Domain Inspector on Compute, Compute response status metrics