Vulnerability · Published Aug 1, 2026 · Assigned by VulnCheck
CVE-2026-67316axios before 1.18.0 Prototype Pollution via bodyless methods
Medium 6.3
In plain English
A medium-severity prototype pollution in axios from axios. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | node-axios | no fix listed | DEBIAN-CVE-2026-67316 |
| Debian:13 | node-axios | no fix listed | DEBIAN-CVE-2026-67316 |
| Debian:14 | node-axios | 1.18.0-1 | DEBIAN-CVE-2026-67316 |
| npm | axios | 1.18.0 | GHSA-mmx7-hfxf-jppx |
| npm | axios | 0.33.0 | GHSA-mmx7-hfxf-jppx |
Affected products (as reported)
Weakness: CWE-1321 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
References
- GitHub Security Advisory (GHSA-mmx7-hfxf-jppx) vendor-advisory
- VulnCheck Advisory: axios before 1.18.0 Prototype Pollution via bodyless methods third-party-advisory