CVE-2026-39865CWE-400CWE-662

Axios HTTP/2 Session Cleanup State Corruption Vulnerability

Medium · published April 8, 2026

CVSS v3.1
5.9
EPSS
1%
Percentile
52.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00731 · 52.0th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-662 · Improper Synchronization
Published
2026-04-08T14:25Z
EPSS history
Timeline
  • 08 APR 14:25Z
    Axios HTTP/2 Session Cleanup State Corruption Vulnerability
    cvelistv5