The SDK-for-Node.js buildpack includes the community August 2020 security release Node.js runtimes.
This buildpack contains the following Node.js runtimes: v10.21.0, v.10.22.0, v12.18.2, v12.18.3. It is based on the community Node.js buildpack v1.7.26. The latest v10 runtime is the default runtime when one is not specified in the package.json. An existing application will not be affected by the new buildpack until you redeploy or restage. New applications will automatically use the new buildpack.