Directory traversal vulnerability in Starlette versions 0.13.5 and later and prior to 0.27.0 allows a remote unauthenticated attacker to view files in a web service which was built using Starlette.

The remote Debian 12 / 13 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-6302 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
    - -------------------------------------------------------------------------

    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

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Directory traversal vulnerability in Starlette versions 0.13.5 and later and prior to 0.27.0 allows a     remote unauthenticated attacker to view files in a web service which was built using Starlette.
    (CVE-2023-29159)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Directory traversal vulnerability in Starlette versions 0.13.5 and later and prior to 0.27.0 allows a
    remote unauthenticated attacker to view files in a web service which was built using Starlette.
    (CVE-2023-29159)

ID	Name	Product	Family	Type	Severity
317342	Debian dsa-6302 : python3-starlette - security update	Nessus	Debian Local Security Checks	Local	high
227061	Linux Distros Unpatched Vulnerability : CVE-2023-29159	Nessus	Misc.	Local	high
419089	SCA: security update for starlette (GHSA-v5gw-mw7f-84px)	Tenable Cloud Security	SCA Checks	Local	medium
419089	SCA: security update for starlette (GHSA-v5gw-mw7f-84px)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2023-29159

medium

Tenable Plugins

high

high

medium

medium