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wire 2026-05-26
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$ the-wire · showcase

UNDICI PATCHES CHUNKED RESPONSE VALIDATION ACROSS MAJOR VERSIONS

By RepoJournal · Filed · About Node.js · Composed from the cited sources · methodology

panva dependabot[bot]
2 people shipped this
panva @panva 2 cited dependabot[bot] @dependabot[bot] 1 cited

Undici shipped critical fixes for HTTP/1.1 chunked transfer encoding validation in both v6.26.0 and v7.26.0, closing a parsing gap that could affect streaming responses.

Both release lines patched the same vulnerability: validate EOF for chunked h1 responses [2] [3]. The v7 release also backported safe main fixes from the development branch [3], ensuring consistency across the active version tree. On the Node.js core side, WebCrypto spec alignment landed in two complementary PRs covering both nomenclature [5] and systematic regression test coverage [4]. The test suite tightened protections around prototype pollution in cryptographic operations and aligned operation parameters with W3C spec terminology. A streaming regression also shipped: duplex channels now properly handle end() calls after failed endSync() buffering [7], preventing deadlocks when readable side drains queued data. Minor cleanup removed the test-node-output-v8-warning test [6] since asm.js validation is deprecated in V8. Across the ecosystem, semver bumped to 7.8.1 [1] with bug fixes for the npm dependency resolution engine.

Action items

References

  1. [1] build(deps): bump semver from 7.8.0 to 7.8.1 in the prod group ↗ nodejs/remark-preset-lint-node
  2. [2] v6.26.0 ↗ nodejs/undici
  3. [3] v7.26.0 ↗ nodejs/undici
  4. [4] test: cover webcrypto prototype pollution systematically ↗ nodejs/node
  5. [5] doc,lib: align WebCrypto names with spec ↗ nodejs/node
  6. [6] test: remove test-node-output-v8-warning ↗ nodejs/node
  7. [7] stream: wait for push writer end fallback to drain ↗ nodejs/node

$ ls nodejs/reviews/ # the step-back reads

the week in review Node 26.9.0 ships generic crypto MAC API the month in review Node 26 line lands crypto, stream, and FFI hardening as deprecations tighten the core
Topics: JavaScript Full archive → Weekly reviews →

Quick answers

What shipped in Node.js on May 26, 2026?
Undici shipped critical fixes for HTTP/1.1 chunked transfer encoding validation in both v6.26.0 and v7.26.0, closing a parsing gap that could affect streaming responses. In total, 11 commits, 11 pull requests, and 2 releases landed.
Who contributed to Node.js on May 26, 2026?
2 developers shipped this update, including dependabot[bot] and panva.
What were the notable Node.js updates?
build(deps): bump semver from 7.8.0 to 7.8.1 in the prod group, v6.26.0, and v7.26.0.
♥

$ log @nodejs --recent

SEA gets ZIP asset archives, HTTP server sheds per-request allocations 28 shipped Buffer.stringLength(), and a trace_events abort for embedders 40 shipped cpSync dereference regression fixed, trace union punning removed 39 shipped Node 26.9.0 adds a generic MAC API, undici walks back its decompression size cap 27 shipped

$ log --all # elsewhere on the wire

@openclaw Cold-start Gateway diagnostics stop crying wolf, doctor repairs plugin drift Agentic Coding Cline desktop bundles shrink, goose unblocks its own clicks

$ ls showcases/

Rails Django Laravel Go Vercel Vue.js Kubernetes HashiCorp Arch Linux Linux Anthropic OpenAI

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