Starlette: Unvalidated request path concatenated into authority poisons request.url.hostname

Summary In affected versions, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating scheme://hostpath and re-parsing the result, a path that does not begin with / for example @google.com moves the authority boundary...

Use of Incorrectly-Resolved Name or Reference

Overview starlette is a The little ASGI library that shines. Affected versions of this package are vulnerable to Use of Incorrectly-Resolved Name or Reference in the reconstruction of request.url when the HTTP request path does not begin with /. An attacker can mislead the application into trusti...

GHSA-JP82-JPQV-5VV3 Starlette: Unvalidated request path concatenated into authority poisons request.url.hostname

Summary In affected versions, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating scheme://hostpath and re-parsing the result, a path that does not begin with / for example @google.com moves the authority boundary...

GHSA-6JV3-5F52-599M python-multipart: Semicolon treated as querystring field separator enables parameter smuggling

Summary QuerystringParser treated ; as a field separator in application/x-www-form-urlencoded bodies, in addition to &. The WHATWG URL standard, modern browsers, and Python's urllib.parse since the CVE-2021-23336 fix treat only & as a separator. This creates a parser differential: the same bytes...

Server-side Request Forgery (SSRF)

Overview starlette is a The little ASGI library that shines. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the StaticFiles file on Windows systems when handling UNC paths. An attacker can obtain NTLMv2 credentials of the service account by sending a...

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Overview starlette is a The little ASGI library that shines. Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code 'Unsafe Reflection' when dispatching HTTP requests to endpoint attributes via getattr. An attacker can invoke internal...

PT-2026-49597

Name of the Vulnerable Software and Affected Versions Starlette affected versions not specified FastAPI affected versions not specified Description A Denial of Service DoS issue exists in the request.form function when processing application/x-www-form-urlencoded requests. While limits for max...

python311-starlette-1.2.0-1.1 on GA media (moderate)

python311-starlette-1.2.0-1.1 on GA media Announcement ID: openSUSE-SU-2026:11026-1 Rating: moderate Cross-References: CVE-2026-48710 CVSS scores: CVE-2026-48710 SUSE : 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-48710 SUSE : 6.9...

OPENSUSE-SU-2026:11026-1 python311-starlette-1.2.0-1.1 on GA media

These are all security issues fixed in the python311-starlette-1.2.0-1.1 package on the GA media of openSUSE Tumbleweed...

[SECURITY] Fedora 44 Update: python-starlette-0.52.1-2.fc44

Starlette is a lightweight ASGI framework/toolkit, which is ideal for building async web services in Python. It is production-ready, and gives you the following: =E2=80=A2 A lightweight, low-complexity HTTP web framework. =E2=80=A2 WebSocket support. =E2=80=A2 In-process background tasks. =E2=80=...

Fedora 44 : python-starlette (2026-3bce8d3f11)

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-3bce8d3f11 advisory. Backport fix for CVE-2026-48710 Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not...

Fedora 43 : python-starlette (2026-e0f378428e)

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-e0f378428e advisory. Backport fix for CVE-2026-48710 Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not...

01os (>=0.0.1 <=0.0.14), 2025-assignment2-expenses-manager (>=0.1.1 <=0.1.7) +4866 more potentially affected by CVE-2026-48710 via starlette (>=0.20.2 <=1.0.0rc1)

starlette PYPI version =0.20.2, =0.0.1, =0.1.1, =0.5.3, =0.3.6, =0.12.0, =0.4.2, =0.1.10, =0.0.1, =0.1.0, =0.1.3, =0.0.1, =0.1.5, =0.1.1, =0.1.9 and more Source cves: CVE-2026-48710 Source advisory: OSV:GHSA-86QP-5C8J-P5MR...

EUVD-2026-32016

Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks...

Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks

Summary In affected versions, the HTTP Host request header was not validated before being used to reconstruct request.url. Because the routing algorithm relies on the raw HTTP path while request.url is rebuilt from the Host header, a malformed header could make request.url.path differ from the pa...

GHSA-86QP-5C8J-P5MR Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks

Summary In affected versions, the HTTP Host request header was not validated before being used to reconstruct request.url. Because the routing algorithm relies on the raw HTTP path while request.url is rebuilt from the Host header, a malformed header could make request.url.path differ from the pa...

EUVD-2026-33965

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, two FastAPI routes that serve per-component static assets in NiceGUI accept a sub-path parameter that may resolve to a directory rather than a file. Requests that resolve to a directory raise an unhandled RuntimeError inside...

The vulnerability was concealed in Starlette

There is a vulnerability in Starlette, a Python library for developing web services. Starlette is used by various products, including FastAPI. An unauthorized malicious actor can exploit this vulnerability to bypass authentication checks. This allows the malicious actor to access protected URL...

Exploit for CVE-2026-48710

BadHost — CVE-2026-48710 Scanner Detection-only scanner for t...

Debian dsa-6302 : python3-starlette - security update

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 [email protected]...