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CVE-2026-44496

axios: Axios: Client-side Denial of Service via unescaped regex metacharacters in XSRF cookie name

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · June 12, 2026

Updated · October 30, 2026

Description

A flaw was found in Axios. A remote attacker, by influencing the XSRF cookie name in a browser environment, could cause the application to construct a regular expression that leads to excessive processing. This can result in a client-side Denial of Service (DoS), where the affected browser tab may freeze, impacting the availability of the application for the user.

Statement

This Important flaw in Axios can lead to a client-side Denial of Service. An attacker capable of influencing the XSRF cookie name within a browser environment could trigger excessive regular expression processing, causing the affected browser tab to freeze and degrade user availability. This issue specifically impacts browser-based applications and does not affect Node.js HTTP adapter usage, React Native, or web workers.

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 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-1333 · Inefficient Regular Expression Complexity