{"cve":"CVE-2026-67320","nvd":{"published":"2026-08-01T13:17:02.217","modified":"2026-09-01T15:39:00.080","status":"Analyzed","description":"axios in a Node.js deployment using the HTTP adapter can route requests through an attacker-controlled proxy. axios hardens merged request configuration by creating a null-prototype object, but request interceptors run after the merge; a common immutable interceptor pattern such as {...config} or Object.assign({}, config) converts the hardened config back into a regular object. axios then dispatches that object without re-hardening it, and the Node HTTP adapter reads config.proxy through the prototype chain. If an attacker can pollute Object.prototype.proxy, affected requests can be routed through an attacker-controlled proxy. For plaintext HTTP requests, the proxy can observe Authorization headers, Basic auth from config.auth, method, absolute URL, Host, and request body, and can return its own response. This does not establish browser impact or HTTPS header/body disclosure under normal TLS validation. Affected versions are >=0.31.1 (fixed in 0.33.0) and >=1.15.2 (fixed in 1.18.0).","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":8.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-200"],"references":["https://github.com/axios/axios/commit/df53d7dd99b202fb194217abd127ae6a630e70dc","https://github.com/axios/axios/security/advisories/GHSA-gcfj-64vw-6mp9","https://www.vulncheck.com/advisories/axios-before-prototype-pollution-via-node-http-adapter"],"products":["axios:axios"],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-67320","score":0.00523,"percentile":0.4437,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gcfj-64vw-6mp9","url":"https://osv.dev/vulnerability/GHSA-gcfj-64vw-6mp9","summary":"Axios Node HTTP adapter can use an inherited proxy after interceptor config cloning","modified":"2026-09-10T03:50:52.061533850Z","packages":[{"ecosystem":"npm","name":"axios","purl":"pkg:npm/axios","ranges":[">=0.31.1 <0.33.0"],"fixed":["0.33.0"]},{"ecosystem":"npm","name":"axios","purl":"pkg:npm/axios","ranges":[">=1.15.2 <1.18.0"],"fixed":["1.18.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}