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: 0.004 (31.7th 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)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
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.