VDB
DEBIAN-CVE-2025-62727
DEBIAN-CVE-2025-62727
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | starlette | 0.41.3-1, 0.39.2-1, 0.41.0-1 |
| Debian:13 | starlette | 0.46.1-3, 0, 0.46.1-3 |
| Debian | starlette | |
| Debian:14 | starlette | 0.46.1-3, 0.46.1-3, 0 |
| Debian:11 | starlette | 0.46.1-1, 0.46.1-2, 0.46.1-3 |
Timeline
- Oct 28, 2025 CVE Published
- Apr 28, 2026 CVE Updated