Radar — Axios

v1.19.0 — Jul 26, 2026

• Symbol-keyed config fields survive mergeConfig; opt-in AxiosHeaders.parseParameters for quote-aware RFC-style header parameter parsing; Cloudflare’s 520 added to HTTP status codes.

v1.17.0 — Jun 3, 2026

• The Node adapter supports zstd response decompression, with transitional.advertiseZstdAcceptEncoding controlling the Accept-Encoding header.

v1.16.0 — May 2, 2026

• ⚠ The fetch adapter now enforces maxBodyLength / maxContentLength (silently ignored before); proxy requests preserve user-supplied Host headers; percent-encoded basic-auth credentials in URLs are now decoded.
• QUERY HTTP method support across adapters and types.
• ECONNREFUSED exposed as a constant on AxiosError; the internal encode helper is exported for userland param serializers.

v0.32.0 — May 4, 2026

• The 0.x line hardens mergeConfig and header merging with null-prototype objects to block prototype-pollution gadgets.