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