# CVE-2026-40175: Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain

CVE-2026-40175 is fixed in node-axios on 1 platform, first by DEBIAN-CVE-2026-40175, released April 10, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-40175
- Priority: Urgent
- CVSS: 10.0 (Critical)
- EPSS: 0.0198
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 10, 2026
- Weakness: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40175

## Description

Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This vulnerability is fixed in 1.15.0 and 0.3.1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-axios Debian 14 | 1.15.0-1 | [DEBIAN-CVE-2026-40175](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40175.md) | Apr 10, 2026 |
| Linux | node-axios Ubuntu 20.04 LTS (focal) | 0.19.0+dfsg-2ubuntu0.1~esm1 | [node-axios 0.19.0+dfsg-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-node-axios-0.19.0-dfsg-2ubuntu0.1-esm1.md) | Apr 24, 2026 |
| Linux | node-axios Ubuntu 22.04.1 LTS (jammy) | 0.26.0+dfsg-1ubuntu0.1~esm1 | [node-axios 0.26.0+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-node-axios-0.26.0-dfsg-1ubuntu0.1-esm1.md) | Apr 24, 2026 |
| Linux | node-axios Ubuntu 24.04.5 LTS (noble) | 1.6.8+dfsg-2ubuntu0.1~esm1 | [node-axios 1.6.8+dfsg-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-node-axios-1.6.8-dfsg-2ubuntu0.1-esm1.md) | May 7, 2026 |
| Linux | node-axios Ubuntu 26.04.1 LTS (resolute) | 1.13.2+dfsg-1ubuntu0.1~esm1 | [node-axios 1.13.2+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-node-axios-1.13.2-dfsg-1ubuntu0.1-esm1.md) | May 7, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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