Axios: CIDR-form NO_PROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges — GHSA-44G4-M2MJ-WPVX

Summary

## Summary Axios supports proxy environment variables and evaluates `NO_PROXY` exclusions in the Node.js adapter. CIDR-form `NO_PROXY` entries such as `127.0.0.0/8`, `10.0.0.0/8`, or `169.254.169.254/32` are not interpreted as IP ranges. As a result, a request to an IP address inside a configured CIDR exclusion can still be sent through the configured proxy. This affects deployments that rely on CIDR notation to…

Timeline

Published by source

2026-09-30

Risk context

• Reported severity or threat level: medium.
• Reported CVSS score: 6.9 out of 10.
• 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-44G4-M2MJ-WPVX

Source

GitHub

Vendor

GitHub

Published by source

2026-09-30

Last source activity

2026-09-30

Additional identifiers

CVE-2026-101899

Curated by

hlukh.ch

Related advisories and connections

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