CVE-2026-67315 axios CVE debrief

Who should care

Users of axios versions 1.15.0 to 1.17.0, particularly those with proxy configurations, should be aware of this vulnerability and take steps to mitigate it. This includes verifying configurations, updating to version 1.18.0 or later, and monitoring for potential proxy bypass attempts. Security teams and operators managing axios deployments should prioritize this vulnerability.

Technical summary

axios versions 1.15.0 before 1.18.0 fail to recognize 0.0.0.0 as a loopback address in shouldBypassProxy.js, allowing requests to 0.0.0.0 to bypass NO_PROXY rules. Attackers can supply 0.0.0.0 URLs to route requests through configured proxies, potentially exposing local services when the proxy can reach the destination. This vulnerability affects axios deployments with proxy configurations, particularly those using NO_PROXY rules. Security teams should verify configurations and update to version 1.18.0 or later to mitigate potential proxy bypass vulnerabilities.

Defensive priority

Axios users should verify their configurations and update to version 1.18.0 or later to mitigate potential proxy bypass vulnerabilities.

Recommended defensive actions

• Update axios to version 1.18.0 or later
• Verify NO_PROXY configurations
• Monitor for potential proxy bypass attempts
• Review compensating controls for exposed systems
• Check relevant monitoring, detection, and logs for exposed assets
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record indicates that axios versions 1.15.0 before 1.18.0 fail to recognize 0.0.0.0 as a loopback address, potentially allowing requests to bypass NO_PROXY rules. Evidence is limited to CVE and NVD details. Defenders should verify axios configurations and proxy settings to understand potential exposure. Review official advisories for further details.

Official resources