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USN-5364-1: Waitress vulnerability

5 April 2022

waitress could be made to expose sensitive information if it received a specially crafted request.



  • waitress - production-quality pure-Python WSGI server (documentation)


It was discovered that Waitress incorrectly handled certain requests.
An attacker could possibly use this issue to expose sensitive information.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10
Ubuntu 20.04

In general, a standard system update will make all the necessary changes.