# CVE-2026-101905: Axios HTTP adapter prototype pollution leading to man-in-the-middle

Source: https://junglewise.ai/threats/cve-2026-101905-axios-is-a-promise-based-http-client-for-the-browser-and-node-js  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28. Updated: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-101905 · Severity: high · CVSS 4 · Published 2026-09-28

Axios is a popular HTTP client library for Node.js and browsers that applications use to make web requests. Versions 1.15.2 through 1.19.x are vulnerable to a prototype pollution attack that, combined with a separate pollution flaw, allows an attacker to intercept HTTP requests and steal sensitive data like authentication credentials or inject malicious responses while the application believes it is communicating with a legitimate server.

Technologies: [Axios](https://junglewise.ai/threats/technologies/axios), [axios (npm)](https://junglewise.ai/threats/technologies/npm-axios). Vendors: [Axios](https://junglewise.ai/threats/vendors/axios), [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-101905 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101905 being exploited in the wild.

**How severe is CVE-2026-101905?** High severity, with a CVSS score of 4, published 28 September 2026.

**Which products and versions are affected?** Axios 1.15.2 to 1.19.x; axios (npm) >= 1.15.2, < 1.20.0, SEMVER:introduced=1.15.2,fixed=1.20.0.

**Is there a fix for CVE-2026-101905?** Yes. axios (npm): upgrade to 1.20.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-101905 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-101905?** Check whether you run Axios or axios (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- axios (npm): upgrade to 1.20.0 or later

  ```sh
  npm install axios@1.20.0
  ```


## Technical details

The Node HTTP adapter in lib/adapters/http.js fails to provide its own createConnection value, allowing a same-process prototype pollution attack to inject a function onto Object.prototype.createConnection. Node then inherits and invokes this attacker-controlled socket factory, redirecting requests to an attacker-controlled endpoint that receives request headers, bodies, and credentials while returning spoofed responses. The vulnerability requires a separate prototype pollution gadget in the application but results in complete request interception and response manipulation. Fixed in version 1.20.0.

## Affected products

- Axios Axios 1.15.2 to 1.19.x

## Identifiers

- CVE-2026-101905
- GHSA-m8m8-qj5v-23w3

## Timeline

- 2026-08-12: patched: Fixed in version 1.20.0
- 2026-09-28: disclosed

## References

- [https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a](https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a)
- [https://github.com/axios/axios/pull/11141](https://github.com/axios/axios/pull/11141)

## Related threats

- [Axios NO_PROXY CIDR notation bypass in Node.js adapter](https://junglewise.ai/threats/cve-2026-101899-axios-cidr-form-no-proxy-entries-are-ignored-causing-proxy)
- [Axios prototype pollution in ToFormData](https://junglewise.ai/threats/cve-2026-101909-axios-is-a-promise-based-http-client-for-the-browser-and-node-js)
- [Axios fetch adapter header injection via prototype pollution](https://junglewise.ai/threats/cve-2026-101908-axios-is-a-promise-based-http-client-for-the-browser-and-node-js)
- [Axios fetch adapter maxRedirects bypass](https://junglewise.ai/threats/cve-2026-101907-axios-is-a-promise-based-http-client-for-the-browser-and-node-js)
- [Axios ReDoS in shouldBypassProxy regular expression](https://junglewise.ai/threats/cve-2026-101906-axios-is-a-promise-based-http-client-for-the-browser-and-node-js)