{"id":"CVE-2026-101903","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 1.16.1 until 1.20.0, the RFC 2397 regular expression allows slash characters on both sides of the media-type separator. An application passes an attacker-controlled m…","severity":"high","cvss":8.2,"cvssVector":"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","cwe":["CWE-1333"],"vendor":"axios","product":"axios","affected":["axios >= 1.16.1, < 1.20.0"],"published":"2026-09-28","updated":"2026-09-28","sourceUpdated":"2026-09-28T18:17:18.560","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101903","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-c29m-xwm3-cm6r","label":"security-advisories@github.com"},{"url":"https://github.com/axios/axios/security/advisories/GHSA-c29m-xwm3-cm6r","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-28T17:48:43.428191Z"},"cvssSource":"cna","ingestedAt":"2026-09-28T18:17:54.306Z","slug":"CVE-2026-101903","body":"## Overview\n\nAxios is a promise-based HTTP client for the browser and Node.js. From 1.16.1 until 1.20.0, the RFC 2397 regular expression allows slash characters on both sides of the media-type separator. An application passes an attacker-controlled malformed data URL containing many slash characters and no comma. the JavaScript regular-expression engine explores many separator placements before rejecting the URL. Synchronous excessive backtracking can block the Node.js event loop and cause denial of service. The affected identifiers are fromDataURI, DATA_URL_PATTERN, data:. 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":"midnight","depthScore":57,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}