Axios: Header Injection via Inherited headers After Minimal Interceptor — GHSA-J8RH-479H-CP32

Summary

## Summary Axios request interceptors may return a replacement config object. If an interceptor returns a plain object without an own `headers` property, `dispatchRequest()` later evaluates `config.headers` and can resolve an inherited `Object.prototype.headers` value. In a process where another vulnerability has polluted `Object.prototype.headers`, axios can send attacker-controlled headers. Axios does not create…

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: 0.00428.
• 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-J8RH-479H-CP32

Source

GitHub

Vendor

GitHub

Published by source

2026-09-30

Last source activity

2026-09-30

Additional identifiers

CVE-2026-101904

Curated by

hlukh.ch

Related advisories and connections

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