CVE-2023-38704CWE-20

import-in-the-middle allows unsanitized user controlled input in module generation

High · published August 7, 2023

CVSS v3.1
8.1
EPSS
1%
Percentile
62.5
In the wild
Unconfirmed
What it is

import-in-the-middle is a module loading interceptor specifically for ESM modules. The import-in-the-middle loader works by generating a wrapper module on the fly. The wrapper uses the module specifier to load the original module and add some wrapping code. Prior to version 1.4.2, it allows for remote code execution in cases where an application passes user-supplied input directly to the `import()` function. This vulnerability has been patched in import-in-the-middle version 1.4.2.

Some workarounds are available. Do not pass any user-supplied input to `import()`. Instead, verify it against a set of allowed values. If using import-in-the-middle, directly or indirectly, and support for EcmaScript Modules is not needed, ensure that no options are set, either via command-line or the `NODE_OPTIONS` environment variable, that would enable loader hooks.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.01000 · 62.5th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2023-08-07T19:24Z
EPSS history
Timeline
  • 07 AUG 19:24Z
    import-in-the-middle allows unsanitized user controlled input in module generation
    cvelistv5