Permissive List of Allowed Inputs in axios - #VU127594

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Main Vulnerability Database Vulnerabilities #VU127594

Permissive List of Allowed Inputs in axios - #VU127594

Published: April 24, 2026


Vulnerability identifier: #VU127594
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-183
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: axios
Affected software:
axios

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass proxy restrictions and disclose sensitive information.

The vulnerability exists due to permissive list of allowed inputs in lib/helpers/shouldBypassProxy.js when processing Axios requests to loopback addresses in the 127.0.0.0/8 range. A remote attacker can influence the target URL to bypass proxy restrictions and disclose sensitive information.

Exploitation requires the application to use proxy environment variables and rely on NO_PROXY rules to protect loopback services.


Remediation

Install security update from vendor's website.

Sources