Vulnerability in "acorn" found in package-lock.json

[schubon]

Details

GHSA-6chw-6frg-f759

moderate severity
Vulnerable versions: >= 6.0.0, < 6.4.1
Patched version: 6.4.1

Affected versions of acorn are vulnerable to Regular Expression Denial of Service.
A regex in the form of /[x-\ud800]/u causes the parser to enter an infinite loop.
The string is not valid UTF16 which usually results in it being sanitized before reaching the parser.
If an application processes untrusted input and passes it directly to acorn,
attackers may leverage the vulnerability leading to Denial of Service.

Remediation

Upgrade acorn to version 6.4.1 or later. For example:

"dependencies": {
  "acorn": ">=6.4.1"
}

or…

"devDependencies": {
  "acorn": ">=6.4.1"
}

Always verify the validity and compatibility of suggestions with your codebase.