cloudflare/workers-sdk wrangler@4.102.0

on GitHub

Minor Changes

• #14340 f6e49dd Thanks @emily-shen! - Add cf-wrangler build delegate support

  The experimental cf-wrangler delegate binary now accepts build and emits the Build Output API directory through Wrangler's new-config build path. This lets parent tools invoke Wrangler's build-output implementation with cf-wrangler build instead of shelling out through the public Wrangler CLI.

• #14324 36777db Thanks @jamesopstad! - Add experimental --experimental-cf-build-output flag to wrangler build

  When used alongside --experimental-new-config, wrangler build now emits a self-contained Build Output API directory under .cloudflare/output/v0/ instead of delegating to wrangler deploy --dry-run.

Patch Changes

• #14347 673b09e Thanks @jamesopstad! - Update undici from 7.24.8 to 7.28.0

• #14346 e930bd4 Thanks @haidargit! - Bump ws from 8.20.1 to 8.21.0 to address GHSA-96hv-2xvq-fx4p

  GHSA-96hv-2xvq-fx4p / CVE-2026-48779 (high severity) reports a remote memory-exhaustion DoS in ws@<8.21.0: a peer sending a high volume of tiny fragments and data chunks over modest network traffic can crash a ws server or client via OOM. The fix shipped in ws@8.21.0 (commit 2b2abd45, released 2026-05-22), which also introduces the maxBufferedChunks and maxFragments options. This change bumps the workspace catalog entry so that miniflare, wrangler, and @cloudflare/vite-plugin all pick up the patched release.

• #14314 5c3bb11 Thanks @harryzcy! - Bump esbuild to 0.28.1

  This update includes several bug fixes from esbuild versions 0.27.3 through 0.28.1. See the esbuild changelog for details.

• #14331 296ad65 Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  workerd	1.20260616.1	1.20260617.1

• #14275 594544d Thanks @alsuren! - Resolve auto-provisioned D1 bindings via the API in remote subcommands

  Remote D1 subcommands (d1 execute --remote, d1 export --remote, d1 info, d1 insights, d1 delete, d1 migrations apply --remote, d1 migrations list --remote, d1 time-travel) previously failed with:

  Found a database with name or binding DB but it is missing a database_id, which is needed for operations on remote resources.

  when the [[d1_databases]] config entry only had binding and database_name (the shape wrangler deploy writes for automatically-provisioned bindings). They now resolve the real database UUID via GET /accounts/:accountId/d1/database/:name?fields=uuid and proceed as if database_id had been set in config.

  If the config entry only has a binding (no database_name, no database_id), the lookup uses the same name wrangler deploy would create via auto provisioning (<worker name>-<binding-lowercased-with-dashes>).

  Non-404 API failures (auth, rate-limit, server errors) now propagate verbatim instead of being masked as "database not found".

• #14315 a79b899 Thanks @matingathani! - Respect find_additional_modules = false when no_bundle is set

  When using no_bundle = true, wrangler was always scanning for and attaching additional modules even if find_additional_modules was explicitly set to false in the config. Additional modules are now only collected when find_additional_modules is not false, consistent with the bundled code path.

• #14269 5dfb788 Thanks @mattjohnsonpint! - Support dev.plugin on typed services bindings

  Wrangler only honored dev.plugin on unsafe.bindings entries, so users authoring a service binding via services[] could not wire it to a local Miniflare plugin during wrangler dev — they had to fall back to unsafe.bindings and accept a "directly supported by wrangler" warning. Typed services bindings now accept the same dev: { plugin, options? } shape, route the binding through Miniflare's external-plugin pathway in wrangler dev, and strip the field at deploy time. Validation rejects malformed dev shapes.

• #14328 ca61558 Thanks @edevil! - Mention temporary preview accounts in wrangler whoami output when unauthenticated

  When you run wrangler whoami without being logged in, Wrangler now also tells you that you can deploy without logging in by running a command like wrangler deploy --temporary to use a temporary preview account.

• Updated dependencies [673b09e, e930bd4, 5c3bb11, 296ad65]:

  • miniflare@4.20260617.0