{"id":"CVE-2026-44490","summary":"Axios: DoS & Header Injection via Prototype Pollution Read-Side Gadgets in axios merge functions","details":"Axios is a promise based HTTP client for the browser and Node.js. Prior to 0.32.0 and 1.16.0, axios exposes two read-side prototype-pollution gadgets. When Object.prototype is polluted by an upstream dependency in the same process (e.g. lodash _.merge / CVE-2018-16487), axios silently picks up the polluted values. (1) lib/utils.js line 406 builds merge()'s accumulator as result = {}, so result[targetKey] (line 414) walks Object.prototype and the polluted bucket's own keys are copied into the merged headers and ride out on the wire. (2) lib/core/mergeConfig.js line 26 builds the hasOwnProperty descriptor as a plain-object literal. Object.defineProperty reads descriptor.get/descriptor.set via the prototype chain, so a polluted Object.prototype.get or Object.prototype.set makes the call throw TypeError synchronously on every axios request. This vulnerability is fixed in 0.32.0 and 1.16.0.","aliases":["GHSA-898c-q2cr-xwhg"],"modified":"2026-07-15T01:49:16.206247811Z","published":"2026-06-11T15:36:13.021Z","related":["CGA-q744-r27r-j485"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-1321"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44490.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44490.json"},{"type":"ADVISORY","url":"https://github.com/axios/axios/security/advisories/GHSA-898c-q2cr-xwhg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44490"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/axios/axios","events":[{"introduced":"0"},{"fixed":"8db2d44896849a21ed9721185b1034df24e1ba7b"},{"introduced":"484aa4fe6addccbd32206a31eb3d2d000843066e"},{"fixed":"df53d7dd99b202fb194217abd127ae6a630e70dc"}],"database_specific":{"cpe":"cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"0"},{"fixed":"0.32.0"},{"introduced":"1.0.0"},{"fixed":"1.16.0"}],"source":"CPE_RANGE"}}],"versions":["v0.31.1","v1.15.2","v1.15.1","v0.31.0","v1.15.0","v1.14.0","v1.13.6","v0.30.3","v0.30.2","v1.13.5","v1.13.4","v1.13.3","v1.13.2","v1.13.1","v1.13.0","v0.30.1","v1.12.2","v1.12.1","v1.12.0","v0.30.0","v1.11.0","v1.10.0","v1.9.0","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v0.29.0","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v0.28.1","v1.7.1","v1.7.0","v1.7.0-beta.2","v1.7.0-beta.1","v1.7.0-beta.0","v1.6.8","v1.6.7","v0.28.0","v1.6.6","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.1","v1.5.0","v1.4.0","v1.3.6","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.6","v1.2.5","v1.2.4","v1.2.3","v1.2.2","1.2.2","v1.2.1","v1.2.0","1.2.0-alpha.1","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.0","v0.27.2","v0.27.1","v0.27.0","v0.26.0","v0.26.1","v0.25.0","v0.24.0","v0.23.0","0.21.3","v0.21.2","v0.21.0","v0.20.0","v0.20.0-0","v0.19.2","0.19.1","v0.19.1","v0.19.0","v0.18.0","v0.19.0-beta.1","v0.17.1","v0.17.0","v0.16.2","v0.16.1","v0.16.0","v0.15.3","v0.15.2","v0.15.1","v0.15.0","v0.14.0","v0.13.1","v0.13.0","v0.12.0","v0.11.1","v0.11.0","v0.10.0","v0.9.1","v0.9.0","v0.8.1","v0.8.0","v0.7.0","v0.6.0","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.2","v0.4.1","v0.4.0","v0.3.1","v0.3.0","v0.2.2","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44490.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L"}]}