Description
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.
CVSS 3.7EPSS 0.217%Risk 0.38
View source- Published
- 2026-04-24 18:16:30
- Affected versions
- <0.31.1,<1.15.1
- Type
- Package
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N