{"id":"CVE-2026-101908","title":"Axios is a promise-based HTTP client for the browser and Node.js","summary":"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…","severity":"medium","cvss":6.9,"cvssVector":"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","cwe":["CWE-1321"],"vendor":"axios","product":"axios","affected":["axios >= 1.7.0, < 1.20.0"],"published":"2026-09-28","updated":"2026-09-28","sourceUpdated":"2026-09-28T19:16:48.390","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101908","references":[{"url":"https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a","label":"security-advisories@github.com"},{"url":"https://github.com/axios/axios/pull/11141","label":"security-advisories@github.com"},{"url":"https://github.com/axios/axios/releases/tag/v1.20.0","label":"security-advisories@github.com"},{"url":"https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8","label":"security-advisories@github.com"},{"url":"https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-28T18:14:22.792981Z"},"cvssSource":"cna","ingestedAt":"2026-09-28T18:17:54.307Z","slug":"CVE-2026-101908","body":"## Overview\n\nAxios 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":50,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":212110,"id":"CVE-2026-101908","ts":1790623195364,"field":"exploit_available","old":"false","new":"true"}]}