CVE-2026-42040
- Source
- https://cve.org/CVERecord?id=CVE-2026-42040
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42040.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-42040
- Aliases
- Downstream
- Related
- Published
- 2026-04-24T17:40:31.125Z
- Modified
- 2026-05-18T06:00:10.364675328Z
- Severity
-
- 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- Axios: Null Byte Injection via Reverse-Encoding in AxiosURLSearchParams
- Details
-
Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the encode() function in lib/helpers/AxiosURLSearchParams.js contains a character mapping (charMap) at line 21 that reverses the safe percent-encoding of null bytes. After encodeURIComponent('\x00') correctly produces the safe sequence %00, the charMap entry '%00': '\x00' converts it back to a raw null byte. Primary impact is limited because the standard axios request flow is not affected. This vulnerability is fixed in 1.15.1 and 0.31.1.
- Database specific
{ "cwe_ids": [ "CWE-116", "CWE-626" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42040.json" }- References