{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42042","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-23T16:05:01.709Z","datePublished":"2026-04-24T18:03:29.924Z","dateUpdated":"2026-04-27T17:35:41.883Z"},"containers":{"cna":{"title":"Axios: XSRF Token Cross-Origin Leakage via Prototype Pollution Gadget in `withXSRFToken` Boolean Coercion","problemTypes":[{"descriptions":[{"cweId":"CWE-183","lang":"en","description":"CWE-183: Permissive List of Allowed Inputs","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-201","lang":"en","description":"CWE-201: Insertion of Sensitive Information Into Sent Data","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/axios/axios/security/advisories/GHSA-xx6v-rp6x-q39c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/axios/axios/security/advisories/GHSA-xx6v-rp6x-q39c"}],"affected":[{"vendor":"axios","product":"axios","versions":[{"version":">= 1.0.0, < 1.15.1","status":"affected"},{"version":"< 0.31.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-24T18:03:29.924Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-xx6v-rp6x-q39c","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/axios/axios/security/advisories/GHSA-xx6v-rp6x-q39c","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-27T17:35:32.406605Z","id":"CVE-2026-42042","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-27T17:35:41.883Z"}}]}}