This affects the package tempura before 0.4.0. If the input to the esc function is of type object (i.e an array) it is returned without being escaped/sanitized, leading to a potential Cross-Site Scripting vulnerability.
https://snyk.io/vuln/SNYK-JS-TEMPURA-1569633
https://github.com/lukeed/tempura/releases/tag/v0.4.0
https://github.com/lukeed/tempura/commit/58a5c3671e2f36b26810e77ead9e0dd471902f9b