Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the Axios library's XSRF token protection logic uses JavaScript truthy/falsy semantics instead of strict boolean comparison for the withXSRFToken config property. When this property is set to any truthy non-boolean value (via prototype pollution or misconfiguration), the same-origin check (isURLSameOrigin) is short-circuited, causing XSRF tokens to be sent to all request targets including cross-origin servers controlled by an attacker. This vulnerability is fixed in 1.15.1 and 0.31.1.
History

Wed, 29 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1025
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 28 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 27 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Axios
Axios axios
CPEs cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*
Vendors & Products Axios
Axios axios

Fri, 24 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Description Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the Axios library's XSRF token protection logic uses JavaScript truthy/falsy semantics instead of strict boolean comparison for the withXSRFToken config property. When this property is set to any truthy non-boolean value (via prototype pollution or misconfiguration), the same-origin check (isURLSameOrigin) is short-circuited, causing XSRF tokens to be sent to all request targets including cross-origin servers controlled by an attacker. This vulnerability is fixed in 1.15.1 and 0.31.1.
Title Axios: XSRF Token Cross-Origin Leakage via Prototype Pollution Gadget in `withXSRFToken` Boolean Coercion
Weaknesses CWE-183
CWE-201
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-24T18:03:29.924Z

Updated: 2026-04-27T17:35:41.883Z

Reserved: 2026-04-23T16:05:01.709Z

Link: CVE-2026-42042

cve-icon Vulnrichment

Updated: 2026-04-27T17:35:19.552Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-24T18:16:31.293

Modified: 2026-04-27T20:05:27.500

Link: CVE-2026-42042

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-24T18:03:29Z

Links: CVE-2026-42042 - Bugzilla