Resource exhaustion in Axios
CVE-2026-39865
Axios is a promise based HTTP client for the browser and Node.js. Starting in version 1.13.0 and prior to 1.13.2, Axios HTTP/2 session cleanup logic contains a state corruption bug that allows a malicious server to crash the client process through concurrent session closures. The vulnerability exists in the Http2Sessions.getSession() method in lib/adapters/http.js. The session cleanup logic contains a control flow error when removing sessions from the sessions array. This vulnerability is fixed in 1.13.2.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.007 (50.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Axios — versions >= 1.13.0, < 1.13.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-39865?
- CVE-2026-39865 is a medium-severity vulnerability in Axios, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-04-08.
- How severe is CVE-2026-39865?
- Medium severity. CVSS v3 base score is 5.9 out of 10.