Update dependency axios to v1.13.5 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
axios (source)	1.12.2 → 1.13.5

---

Axios is Vulnerable to Denial of Service via proto Key in mergeConfig

CVE-2026-25639 / GHSA-43fc-jf86-j433

More information

Details

Denial of Service via proto Key in mergeConfig

Summary

The mergeConfig function in axios crashes with a TypeError when processing configuration objects containing __proto__ as an own property. An attacker can trigger this by providing a malicious configuration object created via JSON.parse(), causing complete denial of service.

Details

The vulnerability exists in lib/core/mergeConfig.js at lines 98-101:

utils.forEach(Object.keys({ ...config1, ...config2 }), function computeConfigValue(prop) {
  const merge = mergeMap[prop] || mergeDeepProperties;
  const configValue = merge(config1[prop], config2[prop], prop);
  (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);
});

When prop is '__proto__':

1. JSON.parse('{"__proto__": {...}}') creates an object with __proto__ as an own enumerable property
2. Object.keys() includes '__proto__' in the iteration
3. mergeMap['__proto__'] performs prototype chain lookup, returning Object.prototype (truthy object)
4. The expression mergeMap[prop] || mergeDeepProperties evaluates to Object.prototype
5. Object.prototype(...) throws TypeError: merge is not a function

The mergeConfig function is called by:

• Axios._request() at lib/core/Axios.js:75
• Axios.getUri() at lib/core/Axios.js:201
• All HTTP method shortcuts (get, post, etc.) at lib/core/Axios.js:211,224

PoC

import axios from "axios";

const maliciousConfig = JSON.parse('{"__proto__": {"x": 1}}');
await axios.get("https://httpbin.org/get", maliciousConfig);

Reproduction steps:

1. Clone axios repository or npm install axios
2. Create file poc.mjs with the code above
3. Run: node poc.mjs
4. Observe the TypeError crash

Verified output (axios 1.13.4):

TypeError: merge is not a function
    at computeConfigValue (lib/core/mergeConfig.js:100:25)
    at Object.forEach (lib/utils.js:280:10)
    at mergeConfig (lib/core/mergeConfig.js:98:9)

Control tests performed:

Test	Config	Result
Normal config	{"timeout": 5000}	SUCCESS
Malicious config	JSON.parse('{"__proto__": {"x": 1}}')	CRASH
Nested object	{"headers": {"X-Test": "value"}}	SUCCESS

Attack scenario:
An application that accepts user input, parses it with JSON.parse(), and passes it to axios configuration will crash when receiving the payload {"__proto__": {"x": 1}}.

Impact

Denial of Service - Any application using axios that processes user-controlled JSON and passes it to axios configuration methods is vulnerable. The application will crash when processing the malicious payload.

Affected environments:

• Node.js servers using axios for HTTP requests
• Any backend that passes parsed JSON to axios configuration

This is NOT prototype pollution - the application crashes before any assignment occurs.

Severity

• CVSS Score: 7.5 / 10 (High)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

• https://github.com/axios/axios/security/advisories/GHSA-43fc-jf86-j433
• https://github.com/axios/axios/pull/7369
• https://github.com/axios/axios/commit/28c721588c7a77e7503d0a434e016f852c597b57
• https://github.com/axios/axios/releases/tag/v1.13.5
• https://nvd.nist.gov/vuln/detail/CVE-2026-25639
• https://github.com/axios/axios/pull/7388
• https://github.com/axios/axios/commit/d7ff1409c68168d3057fc3891f911b2b92616f9e
• https://github.com/axios/axios/releases/tag/v0.30.3
• https://github.com/advisories/GHSA-43fc-jf86-j433

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Release Notes

axios/axios (axios)

v1.13.5

Compare Source

This release patches a prototype pollution denial-of-service vulnerability, fixes a missing status field regression in AxiosError, adds interceptor ordering control, and introduces URL validation for isAbsoluteURL.

v1.13.4

Compare Source

Patch release fixing regressions introduced in v1.13.3, including TypeScript export compatibility and CI/build stability.

v1.13.3

Compare Source

Bug Fixes

• http2: Use port 443 for HTTPS connections by default. (#​7256) (d7e6065)
• interceptor: handle the error in the same interceptor (#​6269) (5945e40)
• main field in package.json should correspond to cjs artifacts (#​5756) (7373fbf)
• package.json: add 'bun' package.json 'exports' condition. Load the Node.js build in Bun instead of the browser build (#​5754) (b89217e)
• silentJSONParsing=false should throw on invalid JSON (#​7253) (#​7257) (7d19335)
• turn AxiosError into a native error (#​5394) (#​5558) (1c6a86d)
• types: add handlers to AxiosInterceptorManager interface (#​5551) (8d1271b)
• types: restore AxiosError.cause type from unknown to Error (#​7327) (d8233d9)
• unclear error message is thrown when specifying an empty proxy authorization (#​6314) (6ef867e)

Features

• add undefined as a value in AxiosRequestConfig (#​5560) (095033c)
• add automatic minor and patch upgrades to dependabot (#​6053) (65a7584)
• add Node.js coverage script using c8 (closes #​7289) (#​7294) (ec9d94e)
• added copilot instructions (3f83143)
• compatibility with frozen prototypes (#​6265) (860e033)
• enhance pipeFileToResponse with error handling (#​7169) (88d7884)
• types: Intellisense for string literals in a widened union (#​6134) (f73474d), closes /github.com/microsoft/TypeScript/issues/33471#issuecomment-1376364329

Reverts

• Revert "fix: silentJSONParsing=false should throw on invalid JSON (#​7253) (#​7…" (#​7298) (a4230f5), closes #​7253 #​7 #​7298
• deps: bump peter-evans/create-pull-request from 7 to 8 in the github-actions group (#​7334) (2d6ad5e)

Contributors to this release

• Ashvin Tiwari
• Nikunj Mochi
• Anchal Singh
• jasonsaayman
• Julian Dax
• Akash Dhar Dubey
• Madhumita
• Tackoil
• Justin Dhillon
• Rudransh
• WuMingDao
• codenomnom
• Nandan Acharya
• Eric Dubé
• Tibor Pilz
• Gabriel Quaresma
• Turadg Aleahmad
• JohnTitor
• rohit miryala
• Wilson Mun
• techcodie
• Ved Vadnere
• svihpinc
• SANDESH LENDVE
• Lubos
• Jarred Sumner
• Adam Hines
• Subhan Kumar Rai
• Joseph Frazier
• KT0803
• Albie
• Jake Hayes

v1.13.2

Compare Source

Bug Fixes

• http: fix 'socket hang up' bug for keep-alive requests when using timeouts; (#​7206) (8d37233)
• http: use default export for http2 module to support stubs; (#​7196) (0588880)

Performance Improvements

• http: fix early loop exit; (#​7202) (12c314b)

Contributors to this release

• Dmitriy Mozgovoy
• Kasper Isager Dalsgarð

v1.13.1

Compare Source

Bug Fixes

• http: fixed a regression that caused the data stream to be interrupted for responses with non-OK HTTP statuses; (#​7193) (bcd5581)

Contributors to this release

• Anchal Singh
• Dmitriy Mozgovoy

v1.13.0

Compare Source

Bug Fixes

• fetch: prevent TypeError when config.env is undefined (#​7155) (015faec)
• resolve issue #​7131 (added spacing in mergeConfig.js) (#​7133) (9b9ec98)

Features

• http: add HTTP2 support; (#​7150) (d676df7)

Contributors to this release

• Dmitriy Mozgovoy
• Noritaka Kobayashi
• Aviraj2929
• prasoon patel
• Samyak Dandge
• Anchal Singh
• Rahul Kumar
• Amit Verma
• Abhishek3880
• Dhvani Maktuporia
• Usama Ayoub
• ikuy1203
• Nikhil Simon Toppo
• Jane Wangari
• Supakorn Ieamgomol
• Kian-Meng Ang
• UTSUMI Keiji

1.12.2 (2025-09-14)

Bug Fixes

• fetch: use current global fetch instead of cached one when env fetch is not specified to keep MSW support; (#​7030) (cf78825)

Contributors to this release

• Dmitriy Mozgovoy
• Noritaka Kobayashi

1.12.1 (2025-09-12)

Bug Fixes

• types: fixed env config types; (#​7020) (b5f26b7)

Contributors to this release

• Dmitriy Mozgovoy

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.