{"id":"CVE-2026-42042","summary":"Axios: XSRF Token Cross-Origin Leakage via Prototype Pollution Gadget in `withXSRFToken` Boolean Coercion","details":"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.","aliases":["GHSA-xx6v-rp6x-q39c"],"modified":"2026-07-08T08:05:12.231901757Z","published":"2026-04-24T18:03:29.924Z","related":["CGA-9283-q4c6-fjcr"],"database_specific":{"cwe_ids":["CWE-183","CWE-201"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42042.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42042.json"},{"type":"ADVISORY","url":"https://github.com/axios/axios/security/advisories/GHSA-xx6v-rp6x-q39c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42042"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/axios/axios","events":[{"introduced":"0"},{"fixed":"a589dc525af12e0fabef7d6e5be028ad433eee31"},{"introduced":"484aa4fe6addccbd32206a31eb3d2d000843066e"},{"fixed":"ac42446be51300fe214ba3c6e40cc95f34fd6871"}],"database_specific":{"cpe":"cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*","source":"CPE_RANGE","extracted_events":[{"introduced":"0"},{"fixed":"0.31.1"},{"introduced":"1.0.0"},{"fixed":"1.15.1"}]}}],"versions":["v0.31.0","v1.15.0","v1.14.0","v1.13.6","v0.30.3","v0.30.2","v1.13.5","v1.13.4","v1.13.3","v1.13.2","v1.13.1","v1.13.0","v0.30.1","v1.12.2","v1.12.1","v1.12.0","v0.30.0","v1.11.0","v1.10.0","v1.9.0","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v0.29.0","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v0.28.1","v1.7.1","v1.7.0","v1.7.0-beta.2","v1.7.0-beta.1","v1.7.0-beta.0","v1.6.8","v1.6.7","v0.28.0","v1.6.6","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.1","v1.5.0","v1.4.0","v1.3.6","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.6","v1.2.5","v1.2.4","v1.2.3","v1.2.2","1.2.2","v1.2.1","v1.2.0","1.2.0-alpha.1","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.0","v0.27.2","v0.27.1","v0.27.0","v0.26.0","v0.26.1","v0.25.0","v0.24.0","v0.23.0","0.21.3","v0.21.2","v0.21.0","v0.20.0","v0.20.0-0","v0.19.2","0.19.1","v0.19.1","v0.19.0","v0.18.0","v0.19.0-beta.1","v0.17.1","v0.17.0","v0.16.2","v0.16.1","v0.16.0","v0.15.3","v0.15.2","v0.15.1","v0.15.0","v0.14.0","v0.13.1","v0.13.0","v0.12.0","v0.11.1","v0.11.0","v0.10.0","v0.9.1","v0.9.0","v0.8.1","v0.8.0","v0.7.0","v0.6.0","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.2","v0.4.1","v0.4.0","v0.3.1","v0.3.0","v0.2.2","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42042.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"}]}