Home / mailings [SECURITY] [DSA 6302-1] starlette security update
Posted on 27 May 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6302-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
May 27, 2026 https://www.debian.org/security/faq
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Package : starlette
CVE ID : CVE-2026-48710
It was discovered that missing validation of Host: headers in the
Starlette ASGI framework could result in a bypass of security checks.
For the oldstable distribution (bookworm), this problem has been fixed
in version 0.26.1-1+deb12u1. This update also resolves three additional
security issues (CVE-2023-29159, CVE-2024-47874 and CVE-2025-54121).
For the stable distribution (trixie), this problem has been fixed in
version 0.46.1-3+deb13u2.
We recommend that you upgrade your starlette packages.
For the detailed security status of starlette please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/starlette
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/
Mailing list: debian-security-announce@lists.debian.org
