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2 vulnerabilities found for starlette by Kludex

CVE-2025-62727 (GCVE-0-2025-62727)

Vulnerability from cvelistv5 – Published: 2025-10-28 20:14 – Updated: 2025-11-04 17:41
VLAI?
Title
Starlette vulnerable to O(n^2) DoS via Range header merging in starlette.responses.FileResponse
Summary
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/merging logic. This enables CPU exhaustion per request, causing denial‑of‑service for endpoints serving files (e.g., StaticFiles or any use of FileResponse). This vulnerability is fixed in 0.49.1.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
Vendor Product Version
Kludex starlette Affected: >= 0.39.0, < 0.49.1
Create a notification for this product.
Show details on NVD website
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CVE-2025-62727 (GCVE-0-2025-62727)

Vulnerability from nvd – Published: 2025-10-28 20:14 – Updated: 2025-11-04 17:41
VLAI?
Title
Starlette vulnerable to O(n^2) DoS via Range header merging in starlette.responses.FileResponse
Summary
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/merging logic. This enables CPU exhaustion per request, causing denial‑of‑service for endpoints serving files (e.g., StaticFiles or any use of FileResponse). This vulnerability is fixed in 0.49.1.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
Vendor Product Version
Kludex starlette Affected: >= 0.39.0, < 0.49.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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