Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.0 and 0.31.0, Axios does not correctly handle hostname normalization when checking NO_PROXY rules. Requests to loopback addresses like localhost. (with a trailing dot) or [::1] (IPv6 literal) skip NO_PROXY matching and go through the configured proxy.
This goes against what developers expect and lets attackers force requests through a proxy, even if NO_PROXY is set up to protect loopback or internal services. This issue leads to the possibility of proxy bypass and SSRF vulnerabilities allowing attackers to reach sensitive loopback or internal services despite the configured protections. This vulnerability is fixed in 1.15.0 and 0.31.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Axios Axios
cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*
|
— |
1.15.0
|
References 9
https://datatracker.ietf.org/doc/html/rfc1034#section-3.1
security-advisories@github.com
https://datatracker.ietf.org/doc/html/rfc3986#section-3.2.2
security-advisories@github.com
https://github.com/axios/axios/commit/fb3befb6daac6cad26b2e54094d0f2d9e47f24df
security-advisories@github.com
https://github.com/axios/axios/pull/10661
security-advisories@github.com
https://github.com/axios/axios/releases/tag/v1.15.0
security-advisories@github.com
https://github.com/axios/axios/security/advisories/GHSA-3p68-rc4w-qgx5
security-advisories@github.com
https://github.com/axios/axios/commit/03cdfc99e8db32a390e12128208b6778492cee9c
security-advisories@github.com
https://github.com/axios/axios/pull/10688
security-advisories@github.com
https://github.com/axios/axios/releases/tag/v0.31.0
security-advisories@github.com