CVE-2026-67316

axios is vulnerable to read-side prototype-pollution gadgets that can alter request construction when Object.prototype has already been polluted by a separate vulnerability or dependency. In the bodyless method aliases (axios.get(), axios.delete(), axios.head(), axios.options()), inherited data is read via (config || {}).data before config normalization, causing an attacker-controlled body to be sent on requests that did not set one. Additional low-level paths, only reachable when calling exported adapters/helpers (e.g. lib/adapters/http.js, unsafe/helpers/resolveConfig.js) directly with plain configs and no own proxy or paramsSerializer, can inherit polluted proxy values (routing requests through an attacker-controlled proxy) or paramsSerializer values (attacker-controlled URL serialization). These low-level gadgets do not reproduce through normal high-level axios calls on 1.15.2+. The issue is fixed in axios 1.18.0 and 0.33.0.

• CWE-1321

• https://github.com/axios/axios/security/advisories/GHSA-mmx7-hfxf-jppxExploit, Mitigation, Vendor Advisory
• https://www.vulncheck.com/advisories/axios-before-prototype-pollution-via-bodyless-methodsThird Party Advisory
• https://github.com/axios/axios/security/advisories/GHSA-mmx7-hfxf-jppxExploit, Mitigation, Vendor Advisory

Published

Aug 1, 2026

Last Modified

Sep 1, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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