What is CVE-2026-42035?

CVE-2026-42035 is a high-severity vulnerability in Axios, classified under HTTP Response Splitting. CVSS score: 7.4/10. Published 2026-04-24.

How severe is CVE-2026-42035?

High severity. CVSS v3 base score is 7.4 out of 10.

Prototype Pollution in Axios

CVE-2026-42035

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, a prototype pollution gadget exists in the Axios HTTP adapter (lib/adapters/http.js) that allows an attacker to inject arbitrary HTTP headers int…

EPSS: 0.000 (10.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Axios — versions >= 1.0.0, < 1.15.1, < 0.31.1

Weakness classification (CWE)

CWE-113 — HTTP Response Splitting
CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

https://github.com/axios/axios/security/advisories/GHSA-6chq-wfr3-2hj9 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-42035?: CVE-2026-42035 is a high-severity vulnerability in Axios, classified under HTTP Response Splitting. CVSS score: 7.4/10. Published 2026-04-24.
How severe is CVE-2026-42035?: High severity. CVSS v3 base score is 7.4 out of 10.