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CVE-2026-42033

High

Description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, when Object.prototype has been polluted by any co-dependency with keys that axios reads without a hasOwnProperty guard, an attacker can (a) silently intercept and modify every JSON response before the application sees it, or (b) fully hijack the underlying HTTP transport, gaining access to request credentials, headers, and body. The precondition is prototype pollution from a separate source in the same process. This vulnerability is fixed in 1.15.1 and 0.31.1.

SeverityHigh
CVSS7.4
Exploit probability—
ProductAxios
PublishedApr 24, 2026
First seenApr 24, 2026
Weakness typeCWE-1321Prototype pollution

How to fix

Update
  • axios axios0.31.1, 1.15.1 or later
  • axios1.15.1, 0.31.1 or later
Vendor advisories

Affected products

ProductAffected versionsFixed in
axios axiosv < 0.31.1, 1.0.0 ≤ v < 1.15.10.31.1, 1.15.1
axiosnpm1.0.0 ≤ v < 1.15.1, v < 0.31.11.15.1, 0.31.1

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