Versions of the package tough-cookie before 4.1.3 are vulnerable to Prototype Pollution due to improper handling of Cookies when using CookieJar in rejectPublicSuffixes=false mode. This issue arises from the manner in which the objects are initialized.
https://lists.debian.org/debian-lts-announce/2023/07/msg00010.html
https://github.com/salesforce/tough-cookie/releases/tag/v4.1.3
https://github.com/salesforce/tough-cookie/commit/12d474791bb856004e858fdb1c47b7608d09cf6e