ESLint v6.2.1 released

We just pushed ESLint v6.2.1, which is a patch release upgrade of ESLint. This release includes a security fix in the eslint-utils package, which is a dependency of ESLint. The security issue affects users that run ESLint on untrusted source code (e.g. servers that lint the user's project as a service). By taking advantage of a bug in a certain piece of analysis, a user could supply malicious source text that causes arbitrary code to be executed in the linting process.

• This issue affects versions of eslint-utils between v1.2.0 and v1.4.0.
• ESLint versions between v5.3.0 and v6.2.0 are potentially vulnerable (their allowed dependencies include vulnerable eslint-utils versions). However, these versions of ESLint can still be used safely if the eslint-utils dependency is updated to the latest version (e.g. by updating eslint-utils in a lockfile, or purging node_modules and reinstalling).
• ESLint v6.2.1 is not vulnerable to the issue.

Documentation

• 4aeeeed Docs: update docs for ecmaVersion 2020 (#12120) (silverwind)
• 6886148 Docs: Add duplicate keys limitation to accessor-pairs (#12124) (Milos Djermanovic)

Dependency Upgrades

• 8c021b5 Upgrade: eslint-utils 1.4.2 (#12131) (Toru Nagashima)