It was reported that python-bleach, a whitelist-based HTML-sanitizing library, is prone to a mutation XSS vulnerability in bleach.clean when noscript and one or more raw text tags were whitelisted.

For the stable distribution (buster), this problem has been fixed in version 3.1.1-0+deb10u1.

We recommend that you upgrade your python-bleach packages.

For the detailed security status of python-bleach please refer to its security tracker page at: https://security-tracker.debian.org/tracker/python-bleach