{"id":"CVE-2026-101908","revision":"ccfca1c5d45d4ba5b0b4081dce58e4ea","records":[{"revision":"ccfca1c5d45d4ba5b0b4081dce58e4ea","observedAt":"2026-10-25T04:17:26.915+00:00","statement":{"source":"nvd","id":"CVE-2026-101908","aliases":[],"title":"Axios is a promise-based HTTP client for the browser and Node.js. From 1.7.0 until 1.20.0, the fetch adapter constructs a Request with sanitized resolvedOptions but then calls fetch with the original fetchOptions. A separate same-process pr…","description":"Axios is a promise-based HTTP client for the browser and Node.js. From 1.7.0 until 1.20.0, the fetch adapter constructs a Request with sanitized resolvedOptions but then calls fetch with the original fetchOptions. A separate same-process prototype-pollution flaw populates Object.prototype.headers so fetchOptions.headers resolves through inheritance. The inherited fetchOptions.headers value overrides the sanitized Request headers through the second argument to fetch after Request construction. Attacker-controlled request headers can alter authorization, caching, metadata-service access, or application-specific behavior. This issue is fixed in version 1.20.0.","state":0,"publishedAt":"2026-09-28T18:17:19.44+00:00","modifiedAt":"2026-09-30T19:38:27.293+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.9,"severity":"MEDIUM"}],"references":["https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a","https://github.com/axios/axios/pull/11141","https://github.com/axios/axios/releases/tag/v1.20.0","https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101908","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-1321"],"productCriteria":[],"sourceDates":{"published":"2026-09-28T18:17:19.440","lastModified":"2026-09-30T19:38:27.293"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-101908","identifiers":["CVE-2026-101908"]},"retained":false,"historicalAffected":[]}],"coverage":[]}