There is 1 open security issue in bookworm.
1 issue left for the package maintainer to handle:
- CVE-2025-57804:
(needs triaging)
h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without properly validating header names/values, enabling attackers to manipulate request boundaries and bypass security controls. This issue has been patched in version 4.3.0.
You can find information about how to handle this issue in the security team's documentation.
![[bug history graph]](https://qa.debian.org/data/bts/graphs/p/python-h2.png){kind=link}