astro is an Astro is a modern site builder with web best practices, performance, and DX front-of-mind.

Affected versions of this package are vulnerable to Cross-site Scripting (XSS) through the ViewTransitions component. An attacker can execute arbitrary scripts in the context of the user's browser session by manipulating the DOM elements such as iframe tags with unsanitized name attributes to shadow document.scripts (DOM Clobbering Attack).

Note:

This is only exploitable if the application uses Astro's client-side routing and stores attacker-controlled scriptless HTML elements on the destination pages.

starlette is a The little ASGI library that shines.

Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via multipart/form-data requests, due to treating parts without a filename as text form fields and buffering those in byte strings with no size limit.

An attacker could 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 by uploading arbitrary large form fields.

Note:

This vulnerability affects all applications built with Starlette (or FastAPI) accepting form requests.

Affected versions of this package are vulnerable to Denial of Service (DoS) via the DosFilter process. An attacker can exhaust the server's memory and cause a denial of service by repeatedly sending crafted requests that trigger OutOfMemory errors.

Note:

This is only exploitable if the server does not have session passivation or an aggressive session inactivation timeout configured.