A lighttpd security update has been released for Debian GNU/Linux 11 to address several vulnerabilities.

DSA 5243-1: lighttpd security update

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Debian Security Advisory DSA-5243-1 security@debian.org
  https://www.debian.org/security/ Helmut Grohne
September 28, 2022   https://www.debian.org/security/faq
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Package : lighttpd
CVE ID : CVE-2022-37797 CVE-2022-41556

Several vulnerabilities were discovered in lighttpd, a fast webserver
with minimal memory footprint.

CVE-2022-37797

An invalid HTTP request (websocket handshake) may cause a NULL
pointer dereference in the wstunnel module.

CVE-2022-41556

A resource leak in mod_fastcgi and mod_scgi could lead to a denial
of service after a large number of bad HTTP requests.

For the stable distribution (bullseye), these problems have been fixed in
version 1.4.59-1+deb11u2.

We recommend that you upgrade your lighttpd packages.

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

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/