CVSS: 5.3EPSS: 0%CPEs: 1EXPL: 0CVE-2025-54121 – Starlette has possible denial-of-service vector when parsing large files in multipart forms
https://notcve.org/view.php?id=CVE-2025-54121
21 Jul 2025 — Starlette is a lightweight ASGI (Asynchronous Server Gateway Interface) framework/toolkit, designed for building async web services in Python. In versions 0.47.1 and below, when parsing a multi-part form with large files (greater than the default max spool size) starlette will block the main thread to roll the file over to disk. This blocks the event thread which means the application can't accept new connections. The UploadFile code has a minor bug where instead of just checking for self._in_memory, the lo... • https://github.com/encode/starlette/blob/fa5355442753f794965ae1af0f87f9fec1b9a3de/starlette/datastructures.py#L436C5-L447C14 • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 8.7EPSS: 0%CPEs: 1EXPL: 0CVE-2024-47874 – Starlette Denial of service (DoS) via multipart/form-data
https://notcve.org/view.php?id=CVE-2024-47874
15 Oct 2024 — Starlette is an Asynchronous Server Gateway Interface (ASGI) framework/toolkit. Prior to version 0.40.0, Starlette treats `multipart/form-data` parts without a `filename` as text form fields and buffers those in byte strings with no size limit. This allows an attacker to upload arbitrary large form fields and cause Starlette to both slow down significantly due to excessive memory allocations and copy operations, and also consume more and more memory until the server starts swapping and grinds to a halt, or ... • https://github.com/encode/starlette/security/advisories/GHSA-f96h-pmfr-66vw • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.8EPSS: 1%CPEs: 1EXPL: 1CVE-2023-29159
https://notcve.org/view.php?id=CVE-2023-29159
01 Jun 2023 — 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. La vulnerabilidad de salto de directorios en Starlette v0.13.5 y posteriores y anteriores a 0.27.0 permite a un atacante remoto no autenticado ver archivos en un servicio web que fue creado usando Starlette. • https://github.com/encode/starlette/releases/tag/0.27.0 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2023-30798 – MultipartParser DOS with too many fields or files in Starlette Framework
https://notcve.org/view.php?id=CVE-2023-30798
21 Apr 2023 — There MultipartParser usage in Encode's Starlette python framework before versions 0.25.0 allows an unauthenticated and remote attacker to specify any number of form fields or files which can cause excessive memory usage resulting in denial of service of the HTTP service. • https://github.com/encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fa • CWE-400: Uncontrolled Resource Consumption •