Bumps axios from 1.18.0 to 1.20.0.

Sourced from axios's releases.

v1.20.0 — August 19, 2026

This release hardens runtime option handling, adds RFC 9110 status-code aliases, fixes Node.js and XHR reliability issues, and refreshes project tooling and documentation.

⚠️ Breaking Changes & Deprecations

• HTTP Status Naming: Added ContentTooLarge (413) and UnprocessableContent (422), while retaining PayloadTooLarge and UnprocessableEntity as backward-compatible deprecated aliases. (#11082)

🔒 Security Fixes

• Runtime Option Handling: Hardened behavioral configuration reads against shared and foreign prototype pollution and normalized unsafe interceptor replacement objects. This also clarifies Fetch redirect and custom implementation behavior, HTTP/2 DNS and proxy handling, CIDR-based NO_PROXY matching, and malformed data URI rejection; see the PR for documented compatibility effects. (#11141)

🐛 Bug Fixes

• Interceptor Lifecycle: Prevented unbounded handler-array growth by trimming trailing ejected interceptors without changing iteration semantics, and kept interceptor operations safe when the public handlers field is nullish. (#11087, #11118)
• Request Error Preservation: Prevented custom Error.prepareStackTrace implementations that return non-string values from replacing the original request failure with an unrelated TypeError. (#11109)
• XHR Reliability: Navigation-canceled requests now reject with ECONNABORTED instead of resolving with status 0, while successful downloads flush their final progress callback during the live loadend dispatch. (#11094, #11121)
• Node.js Socket Memory: Removed request-context retention from per-socket error listeners, preventing completed response data from being pinned for the lifetime of pooled keep-alive sockets. (#11091)
• Core Methods and HTTP Errors: Prevented structural method-header buckets from leaking into outgoing headers, standardized invalid DNS lookup and httpVersion failures as AxiosError.ERR_BAD_OPTION_VALUE, and corrected the timeoutErrorMessage merge strategy. (#11096)

🔧 Maintenance & Chores

• Dependencies: Updated fast-uri, postcss, js-yaml, mocha, development-tooling groups, and GitHub Actions dependencies. (#11092, #11098, #11099, #11106, #11107, #11122, #11123, #11126, #11127, #11133, #11140, #11143, #11144)
• Documentation: Applied the v1.19.0 documentation updates, added the missing fs import to the README stream example, introduced localized global search, and repaired the interceptor test link. (#11101, #11113, #11097, #11119)
• Sponsorship: Updated sponsorship links and data and added ScrapingBee as a sponsor. (#11124, #11136, #11137)
• CI and Release: Switched ESM smoke tests to locked dependencies and synchronized package and runtime version metadata for v1.20.0. (#11128, #11152)

🌟 New Contributors

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

• @​yens1 (#11109)
• @​Sasireddy001 (#11113)
• @​ari-token-security (#11094)
• @​timothyokooboh (#11097)
• @​gi9439041-png (#11119)
• @​Hashim1999164 (#11082)
• @​v-dev-cl (#11091)
• @​r0h1tb (#11118)
• @​ostapondo (#11121)

Full Changelog (axios/axios@v1.19.0...v1.20.0)

v1.19.0 - July 22, 2026

This release raises the form-data security floor, adds configuration and type-system capabilities, and fixes NO_PROXY matching, interceptor errors, progress reporting, and serialization edge cases.

🔒 Security Fixes

• Multipart Form Data: Raised the form-data dependency floor to ^4.0.6, preventing fresh installations from resolving versions affected by the CRLF injection vulnerability GHSA-hmw2-7cc7-3qxx (GHSA-hmw2-7cc7-3qxx). (#11028)

... (truncated)

Sourced from axios's changelog.

Changelog

v1.19.0 — July 22, 2026

This release raises the form-data security floor, adds configuration and type-system capabilities, and fixes NO_PROXY matching, interceptor errors, progress reporting, and serialization edge cases.

🔒 Security Fixes

• Multipart Form Data: Raised the form-data dependency floor to ^4.0.6, preventing fresh installations from resolving versions affected by the CRLF injection vulnerability GHSA-hmw2-7cc7-3qxx (GHSA-hmw2-7cc7-3qxx). (#11028)

🚀 New Features

• Configuration Extensibility: Preserved own-enumerable symbol-keyed fields through mergeConfig and added a generic params type across public TypeScript declarations, responses, errors, adapters, and serializers. (#11043, #11081)
• Header Parameter Parsing: Added the opt-in AxiosHeaders.parseParameters() parser for quote-aware, RFC-style HTTP parameter parsing while preserving legacy parsing behavior. (#11051)
• HTTP Status Codes: Added the missing Cloudflare 520 WebServerReturnsAnUnknownError status and matching ESM/CJS declarations. (#11067)

🐛 Bug Fixes

• Form Data Conversion: Limited formDataToJSON path splitting to dot and bracket notation, preserving literal punctuation in keys, and removed browser-facing Buffer.from usage from toFormData to avoid unnecessary polyfills. (#11006, #11018)

• Proxy Bypass: Canonicalized IPv4 shorthand, octal, and hexadecimal forms during NO_PROXY matching and honored * entries within comma- or space-separated bypass lists. (#11029, #11053)

• Cancellation: Propagated already-aborted input signals immediately when composing abort signals. (#11035)

• Header Handling: Preserved empty first values for duplicate singleton headers and made AxiosHeaders#getSetCookie() consistently return arrays for present values. (#11036, #11037)

• URL Handling: Included normalized, safely redacted offending URLs in malformed-protocol errors and removed repeated trailing slashes when combining base URLs. (#11008, #11038)

• Progress Events: Clamped malformed negative progress values to zero and ensured final Node.js download progress events are delivered before streamed responses close. (#11039, #11040)

• Error and JSON Serialization: Serialized Set values as arrays in JSON-compatible snapshots and synthesized useful AxiosError messages from otherwise-empty AggregateError instances. (#11044, #11059)

• Content-Length Enforcement: Corrected base64 data: URL size estimation so maxContentLength is enforced consistently by the HTTP and Fetch adapters. (#11061)

• Synchronous Interceptors: Prevented requests from being dispatched after synchronous request interceptors fail unless their paired rejection handler resolves successfully. (#11071)

🔧 Maintenance & Chores

• Dependencies: Updated development and test tooling, the docs fixture's Axios version, and GitHub Actions integrations including Checkout, Setup Node, Setup Deno, and Zizmor. (#11031, #11055, #11056, #11058, #11079, #11080, #11088, #11089, #11090)
• Build Outputs: Limited sourcemap generation to published minified bundles, removing broken map references from non-minified builds. (#11054)
• Form Data Internals: Centralized FormData header handling and made the Node.js adapter tolerate getHeaders() returning undefined under the content-only policy. (#11062)
• Developer Experience: Ignored common local AI-tooling directories and fixed a constant-reassignment crash when the development sandbox serves its root path. (#11032, #11073)
• Documentation: Updated sponsor information, clarified that baseURL is not a path-security boundary, scoped provenance claims to attested releases, and corrected the configuration-defaults documentation. (#11041, #11068, #11076, #11078)
• Publishing: Simplified v1 publishing to use the npm version bundled with Node.js 26 and updated package metadata for the 1.19.0 release. (#11083, #11095)

🌟 New Contributors

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

• @​afonsojramos (#11028)
• @​MahinAnowar (#11006)
• @​yassertawfik4 (#11024)
• @​AnandSundar (#11029)
• @​lin-hongkuan (#11035)
• @​Wali007-lab (#11054)
• @​magicdawn (#11043)

... (truncated)

• 84a9f3b chore(release): prepare release 1.20.0 (#11152)
• e6824ee fix: core methodList, HTTP adapter errors, and add tests (#11096)
• d8a919f fix(xhr): flush final progress during the live loadend dispatch (#11121)
• 2d2a21a fix(interceptors): tolerate nullish handlers in syncHandlerEntries (#11118)
• d19040b fix: harden runtime option handling (#11141)
• e0a02dd chore(deps): bump zizmorcore/zizmor-action from 0.6.1 to 0.6.2 in the github-...
• d10cb3a chore(deps-dev): bump the development_dependencies group with 4 updates (#11143)
• 2c94646 chore(deps): bump js-yaml and mocha in /tests/smoke/cjs (#11133)
• 76c12bc chore(deps-dev): bump js-yaml from 4.3.0 to 4.3.1 (#11140)
• ba98559 docs: add ScrapingBee sponsor (#11137)
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