Cloudanix VulnDB

CVE-2025-62727

High · 7.5

CVSS

7.5

EPSS

0.8%

Published

Oct 28, 2025

CISA due date

—

The record

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.

Affected packages

Ecosystem Package Introduced Fixed
PyPI starlette 0.39.0 0.49.1
Chainguard airflow-3-compat 0 3.1.2-r0
Chainguard airflow-3-iamguarded-compat 0 3.1.2-r0
Chainguard airflow-core-3-compat 0 3.1.2-r0
Chainguard airflow-core-3-oci-entrypoint 0 3.1.2-r0
Chainguard k8s-sidecar 0 2.0.3-r0
Chainguard kserve 0 0.16.0-r5
Chainguard kserve-agent 0 0.16.0-r5
Chainguard kserve-agent-compat 0 0.16.0-r5
Chainguard kserve-manager 0 0.16.0-r5
Chainguard kserve-manager-compat 0 0.16.0-r5
Chainguard kserve-qpext 0 0.16.0-r5
Chainguard kserve-qpext-compat 0 0.16.0-r5
Chainguard kserve-router 0 0.16.0-r5
Chainguard kserve-router-compat 0 0.16.0-r5
Chainguard kserve-storage-controller 0 0.16.0-r5
Chainguard mlflow 0 3.5.1-r1
Chainguard mlflow-bitnami 0 3.5.1-r1
Chainguard mlflow-iamguarded-compat 0 3.5.1-r1
Chainguard nemo 0 2.5.2-r1
Chainguard open-webui 0 0.6.34-r2
Chainguard open-webui-compat 0 0.6.34-r2
Chainguard reflex 0 0.8.17-r0
Wolfi airflow-3-compat 0 3.1.2-r0
Wolfi airflow-3-iamguarded-compat 0 3.1.2-r0
Wolfi k8s-sidecar 0 2.0.3-r0
Wolfi kserve 0 0.16.0-r5
Wolfi kserve-agent 0 0.16.0-r5
Wolfi kserve-agent-compat 0 0.16.0-r5
Wolfi kserve-manager 0 0.16.0-r5
Wolfi kserve-manager-compat 0 0.16.0-r5
Wolfi kserve-qpext 0 0.16.0-r5
Wolfi kserve-qpext-compat 0 0.16.0-r5
Wolfi kserve-router 0 0.16.0-r5
Wolfi kserve-router-compat 0 0.16.0-r5
Wolfi kserve-storage-controller 0 0.16.0-r5
Wolfi mlflow 0 3.5.1-r1
Wolfi mlflow-bitnami 0 3.5.1-r1
Wolfi mlflow-iamguarded-compat 0 3.5.1-r1
Wolfi open-webui 0 0.6.34-r2
Wolfi open-webui-compat 0 0.6.34-r2
Wolfi reflex 0 0.8.17-r0
openSUSE:Leap 16.0 python-starlette 0 0.41.3-160000.3.1
openSUSE:Tumbleweed python-sse-starlette 0 3.2.0-1.1
openSUSE:Tumbleweed python-starlette 0 0.49.1-1.1
pypi starlette 0.39.0 No fix

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