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fix(deps): update dependency axios to v1.13.5 [security]#1202

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fix(deps): update dependency axios to v1.13.5 [security]#1202
renovate[bot] wants to merge 1 commit intomainfrom
renovate/npm-axios-vulnerability

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@renovate renovate bot commented Feb 11, 2026

This PR contains the following updates:

Package Change Age Confidence
axios (source) 1.12.2 → 1.13.5 age confidence

GitHub Vulnerability Alerts

CVE-2026-25639

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.

Release Notes

axios/axios (axios)

v1.13.5

Compare Source

Release 1.13.5

Highlights
  • Security: Fixed a potential Denial of Service issue involving the __proto__ key in mergeConfig. (PR #​7369)
  • Bug fix: Resolved an issue where AxiosError could be missing the status field on and after v1.13.3. (PR #​7368)
Changes
Security
  • Fix Denial of Service via __proto__ key in mergeConfig. (PR #​7369)
Fixes
  • Fix/5657. (PR #​7313)
  • Ensure status is present in AxiosError on and after v1.13.3. (PR #​7368)
Features / Improvements
  • Add input validation to isAbsoluteURL. (PR #​7326)
  • Refactor: bump minor package versions. (PR #​7356)
Documentation
  • Clarify object-check comment. (PR #​7323)
  • Fix deprecated Buffer constructor usage and README formatting. (PR #​7371)
CI / Maintenance
  • Chore: fix issues with YAML. (PR #​7355)
  • CI: update workflow YAMLs. (PR #​7372)
  • CI: fix run condition. (PR #​7373)
  • Dev deps: bump karma-sourcemap-loader from 0.3.8 to 0.4.0. (PR #​7360)
  • Chore(release): prepare release 1.13.5. (PR #​7379)
New Contributors

Full Changelog: axios/axios@v1.13.4...v1.13.5

v1.13.4

Compare Source

Overview

The release addresses issues discovered in v1.13.3 and includes significant CI/CD improvements.

Full Changelog: v1.13.3...v1.13.4

What's New in v1.13.4

Bug Fixes
  • fix: issues with version 1.13.3 (#​7352) (ee90dfc)
    • Fixed issues discovered in v1.13.3 release
    • Cleaned up interceptor test files
    • Improved workflow configurations
Infrastructure & CI/CD

  • refactor: ci and build (#​7340) (8ff6c19)

    • Major refactoring of CI/CD workflows
    • Consolidated workflow files for better maintainability
    • Added mise configuration for the development environment
    • Improved sponsor block update automation
    • Enhanced issue and PR templates
    • Added automatic release notes generation
    • Implemented workflow cancellation for concurrent runs

  • chore: codegen and some updates to workflows (76cf77b)

    • Code generation improvements
    • Workflow optimisations

Migration Notes

Breaking Changes

None in this release.

Deprecations

None in this release.

Contributors

Thank you to all contributors who made this release possible! Special thanks to:

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
Reverts
Contributors to this release

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
Contributors to this release

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

v1.13.0

Compare Source

Bug Fixes
Features
Contributors to this release

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

1.12.1 (2025-09-12)

Bug Fixes
Contributors to this release

Configuration

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

@renovate renovate bot added the dependencies Pull requests that update a dependency file label Feb 11, 2026
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sonarqubecloud bot commented Feb 11, 2026

Quality Gate Passed Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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