Incomplete List of Disallowed Inputs Affecting axios package, versions >=0.31.0 <0.31.1>=1.15.0 <1.15.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-AXIOS-16298046
- published26 Apr 2026
- disclosed24 Apr 2026
- creditsachinpatilpsp
Introduced: 24 Apr 2026
NewCVE-2026-42043 (opens in a new tab)How to fix?
Upgrade axios to version 0.31.1, 1.15.1 or higher.
Overview
axios is a promise-based HTTP client for the browser and Node.js.
Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs via the isLoopback host check in the proxy helper, which relied on a static list of LOOPBACK_ADDRESSES. An attacker can route requests around an intended proxy by supplying loopback-style destinations such as 127.x.x.x, ::1, or IPv4-mapped IPv6 loopback addresses in a URL. This lets traffic to local services escape proxy controls, exposing internal endpoints and allowing requests to reach services the user expected to be mediated by a proxy.
Note: This vulnerability is the result of an incomplete fix for CVE-2025-62718