next-intl has prototype pollution with `experimental.messages.precompile` via attacker-controlled translation catalog keys

Summary setNestedProperty in packages/next-intl/src/extractor/utils.tsx walks a dotted key path and assigns the final value without blocking the reserved keys proto, constructor, or prototype. When the next-intl Next.js plugin is configured with experimental.messages and messages.precompile: true...

NPM: next-intl has prototype pollution with `experimental.messages.precompile` via attacker-controlled translation catalog keys

NPM: next-intl has prototype pollution with experimental.messages.precompile via attacker-controlled translation catalog keys vulnerability discovered by ? in WordPress Npm next-intl versions = 4.9.1...

GHSA-4C35-WCG5-MM9H next-intl has prototype pollution with `experimental.messages.precompile` via attacker-controlled translation catalog keys

Summary setNestedProperty in packages/next-intl/src/extractor/utils.tsx walks a dotted key path and assigns the final value without blocking the reserved keys proto, constructor, or prototype. When the next-intl Next.js plugin is configured with experimental.messages and messages.precompile: true...

Prototype Pollution

Overview icu-minify is an ICU message format compiler with a 1KB runtime bundle footprint Affected versions of this package are vulnerable to Prototype Pollution in the setNestedProperty function when processing translation catalog keys containing reserved properties such as proto, constructor, o...