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CVE-2025-62727

HIGH

7.5

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung7.5

SchweregradHIGH

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht10/28/2025

Zuletzt geandert11/4/2025

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-407

Referenzen

https://github.com/Kludex/starlette/commit/4ea6e22b489ec388d6004cfbca52dd5b147127c5(security-advisories@github.com)

https://github.com/Kludex/starlette/commit/69ed26a85956ef4bd0161807eb27abf49be7cd3c(security-advisories@github.com)

https://github.com/Kludex/starlette/releases/tag/0.49.1(security-advisories@github.com)

https://github.com/Kludex/starlette/security/advisories/GHSA-7f5h-v6xp-fcq8(security-advisories@github.com)

https://github.com/Kludex/starlette/security/advisories/GHSA-7f5h-v6xp-fcq8(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Korrelationen

Keine Korrelationen erfasst

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