CVE Database›Document archive›CVE-2026-42044

CVE-2026-42044

axios: Axios: Invisible JSON Response Tampering via Prototype Pollution Gadget

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Severity

Important

Red Hat Product Security

7.4

CVSS 3.1

Review impact separately from score.

Published · April 25, 2026

Updated · November 5, 2026

Description

A flaw was found in Axios, a widely used HTTP client. This vulnerability, known as a Prototype Pollution "Gadget" attack, allows a remote attacker to subtly alter JSON API responses. By manipulating a specific function, an attacker can selectively modify data within these responses. This could lead to significant security breaches, including unauthorized privilege escalation, fraudulent balance manipulation, or bypassing critical authorization checks.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes