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CVE-2026-42264

Axios has prototype pollution read-side gadgets in HTTP adapter that allow credential injection and request hijacking

Impact

Axios is a promise based HTTP client for the browser and Node.js. From version 1.0.0 to before version 1.15.2, fFive config properties (auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser) in the HTTP adapter are read via direct property access without hasOwnProperty guards, making them exploitable as prototype pollution gadgets. When Object.prototype is polluted by another dependency in the same process, axios silently picks up these polluted values on every outbound HTTP request. This issue has been patched in version 1.15.2.

Affected packages

EcosystemPackageAffectedFixed in
npmaxios>= 1.0.0, < 1.15.21.15.2

Affected products

VendorProductAffected versions
AxiosAxios
from 1.0.0 before 1.15.2

Weakness classification

CWE-1321CWE-915

References