Axios: Prototype-Pollution Gadget in the Default Instance Allows Inherited Object.prototype.method to Override HTTP Method — GHSA-9FR6-4GFG-395G

Summary

## Summary Axios default-instance requests that omit an explicit method can read an inherited `method` value from `Object.prototype`. If another vulnerability in the same process pollutes `Object.prototype.method`, calls such as `axios.request({ url })` and `axios({ url })` can send a state-changing HTTP method instead of the expected default `GET`. Axios does not create the prototype pollution source. This is a…

Timeline

Published by source

2026-09-30

Risk context

• Reported severity or threat level: medium.
• Reported CVSS score: 6.9 out of 10.
• Reported EPSS value: 0.00413.
• Review exposure for the affected product or family: npm: axios.

Product

npm: axios

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-9FR6-4GFG-395G

Source

GitHub

Vendor

GitHub

Published by source

2026-09-30

Last source activity

2026-09-30

Additional identifiers

CVE-2026-101902

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.