Sourced from axios's releases.

v1.17.0 — June 1, 2026

This release adds Node HTTP zstd decompression, hardens config and release workflows, and fixes authentication, header, proxy, and type-handling regressions.

🔒 Security Fixes

• Config Hardening: Guarded socketPath, params, and paramsSerializer reads with own-property checks to prevent inherited prototype values from affecting request behavior, including SSRF-sensitive paths. (#10901, #10922)
• Release Publishing: Switched the publish workflow to npm staged publishing for safer, auditable package releases with provenance. (#10926)

🚀 New Features

• HTTP Compression: Added Node HTTP adapter support for zstd response decompression, with transitional.advertiseZstdAcceptEncoding controlling whether zstd is advertised in Accept-Encoding. (#6792, #10920)

🐛 Bug Fixes

• Authentication Handling: Restored Basic auth on same-origin Node redirects while continuing to strip credentials cross-origin, and aligned the fetch adapter with HTTP adapter behavior for URL-embedded Basic auth. (#10929, #10896)
• Proxy TLS: Preserved user httpsAgent TLS options when tunneling HTTPS requests through HTTP CONNECT proxies. (#10957)
• React Native FormData: Cleared default Content-Type for React Native FormData so multipart boundaries can be generated correctly. (#10898)
• Headers: Silently skipped empty or whitespace-only header names instead of throwing, matching parsed-header behavior and avoiding React Native response crashes. (#10875)
• Request Data Merging: Preserved enumerable symbol keys when cloning plain request data through axios merge logic. (#10812)
• Bundler Compatibility: Converted resolveConfig from an arrow default export to a named function export to avoid webpack and Babel transform interop failures. (#10891)
• Types: Corrected AxiosHeaders.toJSON() return types and updated CommonJS isCancel typings to narrow to CanceledError<T>. (#10956, #10952)
• Build Tooling: Avoided emitting a null Authorization header from the GitHub build helper when GITHUB_TOKEN is unset. (#10931)

🔧 Maintenance & Chores

• HTTP/2 Internals: Extracted Http2Sessions into its own helper module and added direct unit coverage for session pooling, timeout, and cleanup behavior. (#10861)
• Package Publishing: Reduced published package size by switching to a files allowlist and dropping unneeded unminified bundle source maps. (#10939)
• CI and Release Automation: Added bundle-size reporting, moved reports to the job summary, fixed bundle-size comparison coverage, added Node 26 to the matrix, pinned npm for staged publishing, and prepared the 1.17.0 release. (#10907, #10911, #10916, #10927, #10935, #10983)
• Developer Workflow: Added a dev container and iterated on OpenSpec workflow files before removing them from the release branch. (#10925, #10914, #10958)
• Documentation and Policy: Updated disclosure, contributor, collaboration, threat-model, advanced docs, README badges, release notes, moderator configuration, and project metadata. (#10890, #10889, #10921, #10945, #10905, #10933, #10915, #10887, #10955)
• Dependencies: Bumped Babel tooling, Commitlint, ESLint, Rollup, Globals, Vitest, Playwright, fs-extra, qs, docs dependencies, and GitHub Actions dependencies including actions/dependency-review-action and zizmorcore/zizmor-action. (#10871, #10879, #10918, #10919, #10934, #10947, #10954, #10960)

🌟 New Contributors

We are thrilled to welcome our new contributors. Thank you for helping improve axios:

• @​BasixKOR (#6792)
• @​carladams1299-lab (#10861)
• @​LaplaceYoung (#10812)
• @​JamieMagee (#10939)
• @​RonGamzu (#10905)
• @​sapirbaruch (#10891)
• @​nezukoagent (#10901)
• @​devareddy05 (#10929)
• @​Mohammad-Faiz-Cloud-Engineer (#10922)
• @​azandabot (#10931)
• @​niksy (#10896)

Full Changelog

... (truncated)

Sourced from axios's changelog.

v1.17.0 — June 1, 2026

This release adds Node HTTP zstd decompression, hardens config and release workflows, and fixes authentication, header, proxy, and type-handling regressions.

🔒 Security Fixes

• Config Hardening: Guarded socketPath, params, and paramsSerializer reads with own-property checks to prevent inherited prototype values from affecting request behavior, including SSRF-sensitive paths. (#10901, #10922)
• Release Publishing: Switched the publish workflow to npm staged publishing for safer, auditable package releases with provenance. (#10926)

🚀 New Features

• HTTP Compression: Added Node HTTP adapter support for zstd response decompression, with transitional.advertiseZstdAcceptEncoding controlling whether zstd is advertised in Accept-Encoding. (#6792, #10920)

🐛 Bug Fixes

• Authentication Handling: Restored Basic auth on same-origin Node redirects while continuing to strip credentials cross-origin, and aligned the fetch adapter with HTTP adapter behavior for URL-embedded Basic auth. (#10929, #10896)
• Proxy TLS: Preserved user httpsAgent TLS options when tunneling HTTPS requests through HTTP CONNECT proxies. (#10957)
• React Native FormData: Cleared default Content-Type for React Native FormData so multipart boundaries can be generated correctly. (#10898)
• Headers: Silently skipped empty or whitespace-only header names instead of throwing, matching parsed-header behavior and avoiding React Native response crashes. (#10875)
• Request Data Merging: Preserved enumerable symbol keys when cloning plain request data through axios merge logic. (#10812)
• Bundler Compatibility: Converted resolveConfig from an arrow default export to a named function export to avoid webpack and Babel transform interop failures. (#10891)
• Types: Corrected AxiosHeaders.toJSON() return types and updated CommonJS isCancel typings to narrow to CanceledError<T>. (#10956, #10952)
• Build Tooling: Avoided emitting a null Authorization header from the GitHub build helper when GITHUB_TOKEN is unset. (#10931)

🔧 Maintenance & Chores

• HTTP/2 Internals: Extracted Http2Sessions into its own helper module and added direct unit coverage for session pooling, timeout, and cleanup behavior. (#10861)
• Package Publishing: Reduced published package size by switching to a files allowlist and dropping unneeded unminified bundle source maps. (#10939)
• CI and Release Automation: Added bundle-size reporting, moved reports to the job summary, fixed bundle-size comparison coverage, added Node 26 to the matrix, pinned npm for staged publishing, and prepared the 1.17.0 release. (#10907, #10911, #10916, #10927, #10935, #10983)
• Developer Workflow: Added a dev container and iterated on OpenSpec workflow files before removing them from the release branch. (#10925, #10914, #10958)
• Documentation and Policy: Updated disclosure, contributor, collaboration, threat-model, advanced docs, README badges, release notes, moderator configuration, and project metadata. (#10890, #10889, #10921, #10945, #10905, #10933, #10915, #10887, #10955)
• Dependencies: Bumped Babel tooling, Commitlint, ESLint, Rollup, Globals, Vitest, Playwright, fs-extra, qs, docs dependencies, and GitHub Actions dependencies including actions/dependency-review-action and zizmorcore/zizmor-action. (#10871, #10879, #10918, #10919, #10934, #10947, #10954, #10960)

🌟 New Contributors

We are thrilled to welcome our new contributors. Thank you for helping improve axios:

• @​BasixKOR (#6792)
• @​carladams1299-lab (#10861)
• @​LaplaceYoung (#10812)
• @​JamieMagee (#10939)
• @​RonGamzu (#10905)
• @​sapirbaruch (#10891)
• @​nezukoagent (#10901)
• @​devareddy05 (#10929)
• @​Mohammad-Faiz-Cloud-Engineer (#10922)
• @​azandabot (#10931)
• @​niksy (#10896)

Full Changelog

... (truncated)

• 4306df2 chore: add fun 88 sponsorship
• 931cc8f chore(release): prepare release 1.17.0 (#10983)
• 38ba1b3 fix(fetch): support basic auth from URL (#10896)
• 32e2515 fix: replace ternary side effect in script (#10931)
• 030e722 chore(deps): bump axios from 1.15.2 to 1.16.1 in /docs (#10960)
• ec63164 chore: remove openspec (#10958)
• 3dec28f fix(http): preserve TLS options for proxy tunnels (#10957)
• a2390a5 fix: correct isCancel type to narrow to CanceledError<T> (#10952)
• fa01b92 chore(deps-dev): bump tmp from 0.2.5 to 0.2.7 in /docs (#10954)
• 2d2314a fix: AxiosHeaders toJSON() return types (#10956)
• Additional commits viewable in compare view

This version modifies prepare script that runs during installation. Review the package contents before updating.

Sourced from web-streams-polyfill's releases.

v4.3.0

• 🚀 Optimize reading from a ReadableStream with buffered chunks. (#170)
  • When the stream has a chunk available in its internal queue, defaultReader.read() and byobReader.read(view) will now immediately return a resolved promise using Promise.resolve(). This turns out to be (slightly) faster than creating a new Promise and then immediately resolving it.
• 🚀 Optimize piping from a ReadableStream with buffered chunks. (#170)
  • When the stream has one or more chunks available in its internal queue, pipeTo() will now read all available chunks in a single batch and write them to the destination (while still respecting backpressure).
  • These optimizations were inspired by Node.js.

Sourced from web-streams-polyfill's changelog.

4.3.0 (2026-05-15)

• 🚀 Optimize reading from a ReadableStream with buffered chunks. (#170)
  • When the stream has a chunk available in its internal queue, defaultReader.read() and byobReader.read(view) will now immediately return a resolved promise using Promise.resolve(). This turns out to be (slightly) faster than creating a new Promise and then immediately resolving it.
• 🚀 Optimize piping from a ReadableStream with buffered chunks. (#170)
  • When the stream has one or more chunks available in its internal queue, pipeTo() will now read all available chunks in a single batch and write them to the destination (while still respecting backpressure).
  • These optimizations were inspired by Node.js.

• 12b4fed 4.3.0
• 830acf3 Update changelog [skip ci]
• 932cace Merge pull request #170 from MattiasBuelens/optimize-read-buffered
• f3ad041 Update changelog
• afc47fe Remove matrices with single entry
• 075ecb1 Rename
• 7e4b5aa Move stuff around
• c418337 Extract PipeState and PipeReadRequest classes
• 9ebbe3b Simplify
• ffd2f6a Fix formatting
• Additional commits viewable in compare view

This version was pushed to npm by GitHub Actions, a new releaser for web-streams-polyfill since your current version.