{"id":"CVE-2026-101906","revision":"7ee4f0109b8140a4a7d35489ad183375","records":[{"revision":"7ee4f0109b8140a4a7d35489ad183375","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-101906","aliases":[],"title":"Axios: ReDoS (O(N²)) in shouldBypassProxy host normalization, reachable via untrusted redirect Location","description":"Axios is a promise-based HTTP client for the browser and Node.js. From 1.15.0 until 1.20.0, Axios shouldBypassProxy applies a quadratic trailing-dot regular expression to redirect hostnames. HTTP_PROXY or HTTPS_PROXY is configured, NO_PROXY or no_proxy is non-empty, redirects are followed, and a crafted redirect Location contains many dots followed by a non-dot character. Hostname.replace(/.+$/, '') backtracks quadratically while processing the crafted redirect hostname. Synchronous regular-expression processing can block the Node.js event loop and cause denial of service. This issue is fixed in version 1.20.0.","state":0,"publishedAt":"2026-09-28T17:32:40.772+00:00","modifiedAt":"2026-09-28T19:15:12.274+00:00","affected":[{"ecosystem":"Vendor product","name":"axios","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"axios\",\n                    \"product\": \"axios\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.15.0, < 1.20.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/axios/axios/security/advisories/GHSA-mghh-pgcx-3jjj","https://github.com/axios/axios/pull/11141","https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a","https://github.com/axios/axios/releases/tag/v1.20.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-101906","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-101906","identifiers":["CVE-2026-101906"]},"retained":false,"historicalAffected":[]}],"coverage":[]}