Prototype pollution in axios - CVE-2026-101900
Published: November 9, 2026
Vulnerability identifier: #VU162556
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N]
CVE-ID: CVE-2026-101900
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary JavaScript code.
The vulnerability exists due to improper input validation within inherited FormData getHeaders. A remote attacker can pass specially crafted input to the application and perform prototype pollution, which can result in information disclosure or data manipulation.
Affected software
axios
How to mitigate CVE-2026-101900
Install updates from vendor's website.
axios - update to 1.20.0