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CVE-2026-42042

Axios: XSRF Token Cross-Origin Leakage via Prototype Pollution Gadget in `withXSRFToken` Boolean Coercion PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
axios / axiosaffected >= 1.0.0, < 1.15.1; affected < 0.31.1

CWE

CWE-183, CWE-201

References

ADP enrichment

CISA-ADP

No English description supplied.