PT-2026-48677 · Axios · Axios

Published 2026-06-11 · Updated 2026-06-11 · CVE-2026-44490

NVD

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Axios is a promise based HTTP client for the browser and Node.js. Prior to 0.32.0 and 1.16.0, axios exposes two read-side prototype-pollution gadgets. When Object.prototype is polluted by an upstream dependency in the same process (e.g. lodash .merge / CVE-2018-16487), axios silently picks up the polluted values. (1) lib/utils.js line 406 builds merge()'s accumulator as result = {}, so result[targetKey] (line 414) walks Object.prototype and the polluted bucket's own keys are copied into the merged headers and ride out on the wire. (2) lib/core/mergeConfig.js line 26 builds the hasOwnProperty descriptor as a plain-object literal. Object.defineProperty reads descriptor.get/descriptor.set via the prototype chain, so a polluted Object.prototype.get or Object.prototype.set makes the call throw TypeError synchronously on every axios request. This vulnerability is fixed in 0.32.0 and 1.16.0.

Fix

Prototype Pollution

Weakness Enumeration

CWE-1321

Related Identifiers

CVE-2026-44490

Affected Products

Axios

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-44490 · Security Note
• https://github.com/axios/axios/security/advisories/GHSA-898c-q2cr-xwhg · Note