CVE-2026-101908

Axios is a promise-based HTTP client for the browser and Node.js. From 1.7.0 until 1.20.0, the fetch adapter constructs a Request with sanitized resolvedOptions but then calls fetch with the original fetchOptions. A separate same-process prototype-pollution flaw populates Object.prototype.headers so fetchOptions.headers resolves through inheritance. The inherited fetchOptions.headers value overrides the sanitized Request headers through the second argument to fetch after Request construction. Attacker-controlled request headers can alter authorization, caching, metadata-service access, or application-specific behavior. This issue is fixed in version 1.20.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a
https://github.com/axios/axios/pull/11141
https://github.com/axios/axios/releases/tag/v1.20.0
https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8
https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8

Configurations

No configuration.

History

28 Sep 2026, 19:16

Type	Values Removed	Values Added
References	~~() https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8 -~~	() https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8 -

28 Sep 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-28 18:17

Updated : 2026-09-30 19:38

NVD link : CVE-2026-101908

Mitre link : CVE-2026-101908

CVE.ORG link : CVE-2026-101908

JSON object : View

Products Affected

No product.

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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