3.7

CVE-2026-42040

Exploit

Axios: Null Byte Injection via Reverse-Encoding in AxiosURLSearchParams

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Axios ≫ Axios SwPlatformnode.js Version < 0.31.1
Axios ≫ Axios SwPlatformnode.js Version >= 1.0.0 < 1.15.1
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.06% 0.174
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 3.7 2.2 1.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE-116 Improper Encoding or Escaping of Output

The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

CWE-626 Null Byte Interaction Error (Poison Null Byte)

The product does not properly handle null bytes or NUL characters when passing data between different representations or components.