Prototype pollution in axios - #VU136914

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Main Vulnerability Database Vulnerabilities #VU136914

Prototype pollution in axios - #VU136914

Published: July 6, 2026


Vulnerability identifier: #VU136914
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: axios
Affected software:
axios

Detailed vulnerability description

The vulnerability allows a remote user to control URL serialization and disclose sensitive information.

The vulnerability exists due to improperly controlled modification of object prototype attributes in resolveConfig or browser-adapter helper paths when processing plain config objects after Object.prototype has already been polluted. A remote user can pollute Object.prototype.paramsSerializer to control URL serialization and disclose sensitive information.

This affects direct resolveConfig or browser-adapter helper usage with plain config objects that do not define their own paramsSerializer property.


Remediation

Install security update from vendor's website.

Sources