CVE WatchJul 15, 2026

CVE-2026-42041

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the Axios library is vulnerable to a Prototype

CVSS

4.8

Medium

EPSS

0.6%

p45

KEV

—

Exploit Today

0-100

Published: Apr 24, 2026 · Last modified: Jul 15, 2026 · CWE-287 · CWE-1321 · CWE-915

EPSS · 30d

0.6%EPSS · 30 days0.6%

2026-06-302026-07-17

Technical description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution to silently suppress all HTTP error responses (401, 403, 500, etc.), causing them to be treated as successful responses. This completely bypasses application-level authentication and error handling. The root cause is that validateStatus is the only config property using the mergeDirectKeys merge strategy, which uses JavaScript's in operator — an operator that inherently traverses the prototype chain. When Object.prototype.validateStatus is polluted with () => true, all HTTP status codes are accepted as success. This vulnerability is fixed in 1.15.1 and 0.31.1.

Official references

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