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OpenAdvisories

Product · Kludex

starlette

6 known vulnerabilities.

starlette at a glance

Last 12 months
5
Critical · all time
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Exploited · all time
1
Public exploit · all time
2
New vulnerabilities per month · last 12 months
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Latest advisories

  • High max 6.5
    NCSC-2026-0171 1 CVE 1 exploited

    Kwetsbaarheid verholpen in Starlette

    Er is een kwetsbaarheid verholpen in Starlette, een Python-library voor het ontwikkelen van webservices. Starlette wordt door verschillende producten gebruikt, waaronder FastAPI.

6 results · Feed

  • High 7.5

    Starlette: request.form() limits silently ignored for application/x-www-form-urlencoded enable DoS

    Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form() accepts max_fields and max_part_size to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for a…

  • Low 3.7

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

    Starlette is a lightweight ASGI framework/toolkit. Prior to 1.3.0, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating {scheme}://{host}{path} and re-parsing the result, a path t…

  • Medium 5.3

    Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`

    Starlette is a lightweight ASGI framework/toolkit. In versions 1.0.1 and below, when dispatching a request, HTTPEndpoint selects the handler by lowercasing the HTTP method and looking it up as an attribute with getattr, without restricting the lookup to a kno…

  • High 7.5

    Starlette: SSRF and NTLM credential theft via UNC paths in StaticFiles on Windows

    Starlette is a lightweight ASGI framework/toolkit. In versions 1.0.1 and earlier, StaticFiles on Windows is vulnerable to SSRF. An UNC path such as \\attacker.com\share can cause os.path.realpath to initiate an outbound SMB connection before the path is rejec…

  • Medium 6.5
    CVE-2026-48710 Exploited Public exploit Scanner template EPSS 70%

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

    Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, 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 rebuil…

    KEV Sep 2, 2026
  • High 7.5
    CVE-2025-62727 Public exploit

    Starlette vulnerable to O(n^2) DoS via Range header merging in starlette.responses.FileResponse

    Starlette is a lightweight ASGI framework/toolkit. Starting in version 0.39.0 and prior to version 0.49.1 , an unauthenticated attacker can send a crafted HTTP Range header that triggers quadratic-time processing in Starlette's FileResponse Range parsing/merg…