Sourced from axios's releases.

v1.15.2

This release delivers prototype-pollution hardening for the Node HTTP adapter, adds an opt-in allowedSocketPaths allowlist to mitigate SSRF via Unix domain sockets, fixes a keep-alive socket memory leak, and ships supply-chain hardening across CI and security docs.

🔒 Security Fixes

• Prototype Pollution Hardening (HTTP Adapter): Hardened the Node HTTP adapter and resolveConfig/mergeConfig/validator paths to read only own properties and use null-prototype config objects, preventing polluted auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser from influencing requests. (#10779)
• SSRF via socketPath: Rejects non-string socketPath values and adds an opt-in allowedSocketPaths config option to restrict permitted Unix domain socket paths, returning AxiosError ERR_BAD_OPTION_VALUE on mismatch. (#10777)
• Supply-chain Hardening: Added .npmrc with ignore-scripts=true, lockfile lint CI, non-blocking reproducible build diff, scoped CODEOWNERS, expanded SECURITY.md/THREATMODEL.md with provenance verification (npm audit signatures), 60-day resolution policy, and maintainer incident-response runbook. (#10776)

🚀 New Features

• allowedSocketPaths Config Option: New request config option (and TypeScript types) to allowlist Unix domain socket paths used by the Node http adapter; backwards compatible when unset. (#10777)

🐛 Bug Fixes

• Keep-alive Socket Memory Leak: Installs a single per-socket error listener tracking the active request via kAxiosSocketListener/kAxiosCurrentReq, eliminating per-request listener accumulation, MaxListenersExceededWarning, and linear heap growth under concurrent or long-running keep-alive workloads (fixes #10780). (#10788)

🔧 Maintenance & Chores

• Changelog: Updated CHANGELOG.md with v1.15.1 release notes. (#10781)

Full Changelog

v1.15.1

This release ships a coordinated set of security hardening fixes across headers, body/redirect limits, multipart handling, and XSRF/prototype-pollution vectors, alongside a broad sweep of bug fixes, test migrations, and threat-model documentation updates.

🔒 Security Fixes

• Header Injection Hardening: Tightened validation and sanitisation across request header construction to close the header-injection attack surface. (#10749)
• CRLF Stripping in Multipart Headers: Correctly strips CR/LF from multipart header values to prevent injection via field names and filenames. (#10758)
• Prototype Pollution / Auth Bypass: Replaced unsafe in checks with hasOwnProperty to prevent authentication bypass via prototype pollution on config objects, with additional regression tests. (#10761, #10760)
• withXSRFToken Truthy Bypass: Short-circuits on any truthy non-boolean value, so an ambiguous config no longer silently leaks the XSRF token cross-origin. (#10762)
• maxBodyLength With Zero Redirects: Enforces maxBodyLength even when maxRedirects is set to 0, closing a bypass path for oversized request bodies. (#10753)
• Streamed Response maxContentLength Bypass: Applies maxContentLength to streamed responses that previously bypassed the cap. (#10754)
• Follow-up CVE Completion: Completes an earlier incomplete CVE fix to fully close the regression window. (#10755)

🚀 New Features

• AI-Based Docs Translations: Initial scaffold for AI-assisted translations of the documentation site. (#10705)
• Location Request Header Type: Adds Location to CommonRequestHeadersList for accurate typing of redirect-aware requests. (#7528)

🐛 Bug Fixes

• FormData Handling: Removes Content-Type when no boundary is present on FormData fetch requests, supports multi-select fields, cancels request.body instead of the source stream on fetch abort, and fixes a recursion bug in form-data serialisation. (#7314, #10676, #10702, #10726)
• HTTP Adapter: Handles socket-only request errors without leaking keep-alive listeners. (#10576)
• Progress Events: Clamps loaded to total for computable upload/download progress events. (#7458)
• Types: Aligns runWhen type with the runtime behaviour in InterceptorManager and makes response header keys case-insensitive. (#7529, #10677)
• buildFullPath: Uses strict equality in the base/relative URL check. (#7252)
• AxiosURLSearchParams Regex: Improves the regex used for param serialisation to avoid edge-case mismatches. (#10736)
• Resilient Value Parsing: Parses out header/config values instead of throwing on malformed input. (#10687)

... (truncated)

Sourced from axios's changelog.

v1.15.2 - April 21, 2026

This release delivers prototype-pollution hardening for the Node HTTP adapter, adds an opt-in allowedSocketPaths allowlist to mitigate SSRF via Unix domain sockets, fixes a keep-alive socket memory leak, and ships supply-chain hardening across CI and security docs.

🔒 Security Fixes

• Prototype Pollution Hardening (HTTP Adapter): Hardened the Node HTTP adapter and resolveConfig/mergeConfig/validator paths to read only own properties and use null-prototype config objects, preventing polluted auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser from influencing requests. (#10779)
• SSRF via socketPath: Rejects non-string socketPath values and adds an opt-in allowedSocketPaths config option to restrict permitted Unix domain socket paths, returning AxiosError ERR_BAD_OPTION_VALUE on mismatch. (#10777)
• Supply-chain Hardening: Added .npmrc with ignore-scripts=true, lockfile lint CI, non-blocking reproducible build diff, scoped CODEOWNERS, expanded SECURITY.md/THREATMODEL.md with provenance verification (npm audit signatures), 60-day resolution policy, and maintainer incident-response runbook. (#10776)

🚀 New Features

• allowedSocketPaths Config Option: New request config option (and TypeScript types) to allowlist Unix domain socket paths used by the Node http adapter; backwards compatible when unset. (#10777)

🐛 Bug Fixes

• Keep-alive Socket Memory Leak: Installs a single per-socket error listener tracking the active request via kAxiosSocketListener/kAxiosCurrentReq, eliminating per-request listener accumulation, MaxListenersExceededWarning, and linear heap growth under concurrent or long-running keep-alive workloads (fixes #10780). (#10788)

🔧 Maintenance & Chores

• Changelog: Updated CHANGELOG.md with v1.15.1 release notes. (#10781)

Full Changelog

---

v1.15.1 - April 19, 2026

This release ships a coordinated set of security hardening fixes across headers, body/redirect limits, multipart handling, and XSRF/prototype-pollution vectors, alongside a broad sweep of bug fixes, test migrations, and threat-model documentation updates.

🔒 Security Fixes

• Header Injection Hardening: Tightened validation and sanitisation across request header construction to close the header-injection attack surface. (#10749)

• CRLF Stripping in Multipart Headers: Correctly strips CR/LF from multipart header values to prevent injection via field names and filenames. (#10758)

• Prototype Pollution / Auth Bypass: Replaced unsafe in checks with hasOwnProperty to prevent authentication bypass via prototype pollution on config objects, with additional regression tests. (#10761, #10760)

• withXSRFToken Truthy Bypass: Short-circuits on any truthy non-boolean value, so an ambiguous config no longer silently leaks the XSRF token cross-origin. (#10762)

• maxBodyLength With Zero Redirects: Enforces maxBodyLength even when maxRedirects is set to 0, closing a bypass path for oversized request bodies. (#10753)

• Streamed Response maxContentLength Bypass: Applies maxContentLength to streamed responses that previously bypassed the cap. (#10754)

• Follow-up CVE Completion: Completes an earlier incomplete CVE fix to fully close the regression window. (#10755)

🚀 New Features

• AI-Based Docs Translations: Initial scaffold for AI-assisted translations of the documentation site. (#10705)

... (truncated)

• 5829343 chore(release): prepare release 1.15.2 (#10789)
• 4709a48 fix: added fix for memory leak in sockets (#10788)
• be33360 chore: update changelog (#10781)
• 4791514 fix: more header pollutions (#10779)
• 6feafcf fix: socket issue (#10777)
• 302e273 docs: update docs, add a couple actions etc (#10776)
• ac42446 chore(release): prepare release 1.15.1 (#10767)
• 908f220 docs: update threatmodel (#10765)
• f93f815 docs: added docs around potential decompressions bomb (#10763)
• 1728aa1 fix: short-circuits on any truthy non-boolean in withXSRFToken (#10762)
• Additional commits viewable in compare view