{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-40175: Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-40175","status":"final","version":"1","initial_release_date":"2026-04-10T19:23:52.285Z","current_release_date":"2026-06-30T03:20:54.493Z","revision_history":[{"date":"2026-04-10T19:23:52.285Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This vulnerability is fixed in 1.15.0 and 0.3.1.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-40175 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-40175"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-40175"},{"category":"external","summary":"https://github.com/axios/axios/security/advisories/GHSA-fvcv-3m26-pcqx","url":"https://github.com/axios/axios/security/advisories/GHSA-fvcv-3m26-pcqx"},{"category":"external","summary":"https://github.com/axios/axios/pull/10660","url":"https://github.com/axios/axios/pull/10660"},{"category":"external","summary":"https://github.com/axios/axios/pull/10688","url":"https://github.com/axios/axios/pull/10688"},{"category":"external","summary":"https://github.com/axios/axios/commit/03cdfc99e8db32a390e12128208b6778492cee9c","url":"https://github.com/axios/axios/commit/03cdfc99e8db32a390e12128208b6778492cee9c"},{"category":"external","summary":"https://github.com/axios/axios/commit/363185461b90b1b78845dc8a99a1f103d9b122a1","url":"https://github.com/axios/axios/commit/363185461b90b1b78845dc8a99a1f103d9b122a1"},{"category":"external","summary":"https://github.com/axios/axios/releases/tag/v0.31.0","url":"https://github.com/axios/axios/releases/tag/v0.31.0"},{"category":"external","summary":"https://github.com/axios/axios/releases/tag/v1.15.0","url":"https://github.com/axios/axios/releases/tag/v1.15.0"}]},"product_tree":{"branches":[{"category":"vendor","name":"axios","branches":[{"category":"product_name","name":"axios","branches":[{"category":"product_version","name":">= 1.0.0, < 1.15.0","product":{"name":"axios axios >= 1.0.0, < 1.15.0","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:axios:axios:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"< 0.31.0","product":{"name":"axios axios < 0.31.0","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:axios:axios:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-40175","title":"Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain","notes":[{"category":"description","text":"Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This vulnerability is fixed in 1.15.0 and 0.3.1.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":9,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1","CSAFPID-2"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: V3.1.1.","product_ids":["CSAFPID-1","CSAFPID-2"]}]}]}