Prototype pollution in axios - CVE-2026-44490
Published: May 29, 2026
Vulnerability identifier: #VU132756
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2026-44490
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: axios
Affected software:
axios
axios
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary JavaScript code.
The vulnerability exists due to improper input validation in the merge() function in lib/utils.js. A remote attacker can pass specially crafted input to the application and perform prototype pollution, which can result in data manipulation or denial of service (DoS) condition.
How to mitigate CVE-2026-44490
Install updates from vendor's website.